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schickel 2009-03-20 07:25

Aliquot ranges and status
 
As of [COLOR="Blue"][B]August 2011[/B][/COLOR], all sequences with a starting number below [B]1000000[/B] have been calculated to a minimum height of 110 digits (some may have dropped back below that size due to recent downdriver activity), and there are [B]9253[/B] open sequences in that range.

We are, I believe, the largest project right now that is actively pursuing sequences throughout the entire range. Any open ended sequence is available for reservation, with the following possible exceptions:

The [B][I]Lehmer Five[/I][/B], [B]276, 552, 564, 660, & 966[/B], along with [B]1074, 1134, 19560 & 204828[/B] are currently maintained by [URL="http://www.loria.fr/~zimmerma/records/aliquot.html"]Paul Zimmermann[/URL]. [B]Please co-ordinate any work with him[/B].

The 74 sequences from [B]1200-10000[/B], with the exception of [B]4788[/B], are maintained by [URL="http://christophe.clavier.free.fr/Aliquot/site/Aliquot.html"]Christophe Clavier[/URL] and associates. [b]Email Christophe Clavier to reserve these.[/b]

[b]4788[/b] is currently reserved as a team project by the members of Mersenneforum. Its primary interest is due to work originally done by [URL="http://www.math.ru.nl/~bosma/Projects/ali.html"]Wieb Bosma[/URL]. His work showed a merge occuring after an extensive run. Further investigation by [URL="http://www.lafn.org/~ax810/aliquot.htm"]Clifford Stern[/URL] showed that it actually merges with [B]4788[/B] rather than [B]16100[/B]. Since the merge occurs after 6400+ lines, the combined sequence pair [B]314718/4788[/B] is the longest open sequence at 9000+ lines. Fortunately, stability was achieved at line 2470 and 171 digits with the loss of the '3' factor, eventually followed by a short downdriver run. Stability has now been reached again at 166 digits. Check the [URL="http://www.mersenneforum.org/showthread.php?t=11615"]4788[/URL] thread for the latest info.

Sequences in the range [B]10116-99840[/B] are of particular interest to [URL="http://www.lafn.org/~ax810/aliquot.htm"]Clifford Stern[/URL]. This range has been completed to a minimum of 110 digits by the forum, with selected sequences being pursued higher by Clifford. [b]If you wish to work in this range, check with Clifford, he may have completed work that has not been uploaded to the Factoring Database yet.[/b] Most sequences that he is working will be called out in the reservation thread here.

[SIZE="1"][b]1000000-4000000[/b] has been completed up to 71 digits by axn. [b]Currently there is no active project working above 1000000.[/b][/SIZE]

Everything else is open for pursuit. Check the reservation [URL="http://www.mersenneforum.org/showthread.php?t=11588"]thread[/URL] for current reservations before embarking on any large-scale effort. Links to sites with more in-depth information are available [URL="http://www.mersenneforum.org/showthread.php?t=11613"]here[/URL].

Advice and help on getting started with Aliquot Sequences are available here, just post any questions or problems you might have.

Advice and help on getting started with large-scale factoring efforts are available over in the [URL="http://www.mersenneforum.org/forumdisplay.php?f=19"]Factoring Forum[/URL].

akruppa 2009-03-24 14:28

I just asked Paul about the sequences he maintains. He mentioned that some time ago, he was looking for someone that could run a web-based interface to give access to these sequences with the option of submitting new factors so the sequence would be updated automatically. Does someone operate a web page like this? Maybe even with ECMNet server attached or some such? He'd transfer these 8 sequences then.

Alex

frmky 2009-03-24 16:16

Except for the ECMNet part, that describes Syd's database, [URL="http://factorization.ath.cx/search.php"]http://factorization.ath.cx/search.php[/URL]. The database understands ELF format for the bulk submission of factors, not Paul's fmt format, but I'll be happy to convert them and submit the sequences.

Greg

Andi47 2009-03-24 16:48

[QUOTE=frmky;166512]Except for the ECMNet part, that describes Syd's database, [URL="http://factorization.ath.cx/search.php"]http://factorization.ath.cx/search.php[/URL]. The database understands ELF format for the bulk submission of factors, not Paul's fmt format, but I'll be happy to convert them and submit the sequences.

Greg[/QUOTE]

Does the database check for integrity? (sometimes aliquot.ub finds nonsense factors due to a bug either in ubasic or in the script.)

Syd 2009-03-24 16:55

[quote=Andi47;166514]Does the database check for integrity? (sometimes aliquot.ub finds nonsense factors due to a bug either in ubasic or in the script.)[/quote]

It does, nonsense factors are simply ignored.

Andi47 2009-03-24 17:48

[QUOTE=Syd;166515]It does, nonsense factors are simply ignored.[/QUOTE]

Are lines which follow nonsense factors (and are therefore nonsense too) ignored too?

Syd 2009-03-24 18:02

[quote=Andi47;166525]Are lines which follow nonsense factors (and are therefore nonsense too) ignored too?[/quote]

No they are imported, but taken as another sequence starting with the first nonsense result, therefore it wont show up unless you request it.
There is also no need to submit the sequences in order, you can start for example with lines 2000 to x and submit the first 2000 lines later, even mix the whole sequence up, mix it with another one, leave out the index numbers, etc.
In most cases it recovers the sequences from it.

mklasson 2009-03-24 19:02

[QUOTE=Syd;166530]No they are imported, but taken as another sequence starting with the first nonsense result, therefore it wont show up unless you request it.
There is also no need to submit the sequences in order, you can start for example with lines 2000 to x and submit the first 2000 lines later, even mix the whole sequence up, mix it with another one, leave out the index numbers, etc.
In most cases it recovers the sequences from it.[/QUOTE]

This is very neat Syd! Now when are you going to add a "reserve sequence" feature? :razz:

schickel 2009-03-25 08:44

[QUOTE=akruppa;166500]I just asked Paul about the sequences he maintains. He mentioned that some time ago, he was looking for someone that could run a web-based interface to give access to these sequences with the option of submitting new factors so the sequence would be updated automatically. Does someone operate a web page like this? Maybe even with ECMNet server attached or some such? He'd transfer these 8 sequences then.

Alex[/QUOTE]I have some ideas I'm considering on building that exact type of system. I'll have to see how much spare time I can come up with this year. With the economy in the state it's in, this year looks to prove very, um, interesting at work.....

With the upsurge in interest here lately, I'd like to get something built in the not too distant future to take advantage of all the energy.

RichD 2009-07-13 02:03

Updating database
 
[QUOTE=schickel;166068]
[B]10,000-100,000[/B] maintained by [URL="http://www.lafn.org/~ax810/aliquot.htm"]Clifford Stern[/URL]. He maintains records of downdriver runs among other type of records.[/QUOTE]

How do we get this info into the database?

Do we have to recreate the work for each index?

I am willing to volunteer to help import the data if it is freely available.

RichD.

Greebley 2009-07-13 02:22

The database does have toubles with squares over 2000, so I have had troubles with terms like 3701^2 for example (if 3701 is prime that is).

If you find your sequence you just added has a small term of 7-12 digits that didn't factor, then you may have to manually find the square root. Because of the feature Syd mentioned, once you fix the square root issue, your whole sequence shows up.

henryzz 2009-07-13 06:27

[quote=schickel;166068][B]210,000-250,000[/B] in progress from 80-100 digits by [URL="http://www.aliquot.de/aliquote.htm"]Wolfgang Creyaufmueller[/URL].[/quote]
i thought he had given up this range to us?

10metreh 2009-07-13 06:27

[quote=RichD;180764]How do we get this info into the database?

Do we have to recreate the work for each index?

I am willing to volunteer to help import the data if it is freely available.

RichD.[/quote]

Gary (aka gd_barnes) has the files for 10000-20000, but I don't know if anyone other than Clifford has the rest. Anyway, it is likely that the files would be sent in .alq format, meaning they cannot be immediately submitted, they have to be converted to .elf first.

schickel 2009-07-13 07:49

[QUOTE=henryzz;180784]i thought he had given up this range to us?[/QUOTE]No, actually, I kind of cribbed the 210-250 range after Wolfgang had been silent for some time. But since he had apparently had his project on hiatus since last year, this is work that would have had to be done anyway, whether by him or by us.

schickel 2009-07-13 07:51

[QUOTE=RichD;180764]How do we get this info into the database?

Do we have to recreate the work for each index?

I am willing to volunteer to help import the data if it is freely available.

RichD.[/QUOTE]Clifford has the sequences available and would be amenable to sending it to anyone who would like to extend anything in the 10-100 range. It would be best to co-ordinate any work with him, so as to avoid duplicating effort.

RichD 2009-07-13 18:53

[QUOTE=schickel;180797]Clifford has the sequences available and would be amenable to sending it to anyone who would like to extend anything in the 10-100 range. It would be best to co-ordinate any work with him, so as to avoid duplicating effort.[/QUOTE]

His site shows indexes a few 100 steps further than in Syd's data base for most of the seqs in this range. I've sent him an e-mail requesting the info so I can import into factordb.com without having to recreate each of the missing steps. Apparently he may be away from e-mail for awhile since I haven't heard anything. I also sent a note to gd_barnes.

This is the time of year for vacations/holidays.

kar_bon 2009-07-13 20:09

Good news
 
i wrote a mail to Wolfgang Creyaufmueller yesterday and he sent me today [b]all[/b] his seq-alq files for n<200000 so far.
as far as i can say for now the alqs seems complete with the data i show on my summary page for n<100000.
so i think i can begin to upload those data to the factoring database, but not too much at once, because the issue we had last time.

perhaps i can get all data from Wolfgang from his search for n<1M upto C80!

Greebley 2009-07-13 20:53

When I wanted to upload several files, I simply alternated alqueit -s commands with a sleep command. aliqueit -s waits for the db to respond, so it doesn't run more than one at once and the sleep allows the db to work on other things for a while before the next one.

So:
aliqueit -s 0 <num1>
sleep 10
aliqueit -s 0 <num2>
sleep 10

etc.

I suspect you could run overnight and submit everything without having to interact in any way.

RichD 2009-07-13 23:20

[QUOTE=kar_bon;180859]i wrote a mail to Wolfgang Creyaufmueller yesterday and he sent me today [b]all[/b] his seq-alq files for n<200000 so far.
as far as i can say for now the alqs seems complete with the data i show on my summary page for n<100000.
so i think i can begin to upload those data to the factoring database, but not too much at once, because the issue we had last time.

perhaps i can get all data from Wolfgang from his search for n<1M upto C80![/QUOTE]

Great!!!

Are you offering to keep the official reservation status on your summary pages?
[url]http://www.rieselprime.de/Others/Aliquot000.htm[/url]
[url]http://www.rieselprime.de/Others/Aliquot100.htm[/url]
[url]http://www.rieselprime.de/Others/Aliquot200.htm[/url]

They are easy to read and nice looking too.

kar_bon 2009-07-13 23:35

[QUOTE=RichD;180877]Great!!!

Are you offering to keep the official reservation status on your summary pages?

They are easy to read and nice looking too.[/QUOTE]

i try to do so. by now i'm updating several times a day and i think it's current reservations are online.

they got the advantage to only click on the seq-number to get a window with the database-entry or a click on the length number to get the graph!
it helps me too, to update in about minutes those three pages!

wolfcrey 2009-07-14 15:16

New downloadpage
 
Dear aliquot friends,

I created a new downloadpage. There you will find all the aliquot sequences I calculated during the last few years:

(1, 220000] -> C100
(220000, 10^6] -> C80

[URL="http://www.aliquot.de/tabellen/download.htm"][B]www.aliquot.de/tabellen/download.htm[/B][/URL]

Wolfgang Creyaufmüller

Greebley 2009-07-14 17:11

A big thanks for making this available.

I was thinking of starting to load the 200k+ values into the db. I will use the method of using aliqueit -s to upload with a 10 second sleep between uploads so I don't overload the db and it should allow others to upload also. It can run overnight to get them all.

Edit: I can also do them all if that would be better

kar_bon 2009-07-24 10:09

a remark to the link from S.Hoogendoorn:

there're two errors in his sequences:

209376 has an error at index 862
209760 has an error at index 1208

although he updated his page on 2009-07-17 the last time, he seems no noticed anything about this Fourm or the FactorDatabase or my Summary-pages!

i'll keep an eye on his page with the seqs 200k-210k.

frmky 2010-02-11 22:11

[QUOTE=10metreh;202151]Wieb Bosma will go on to 450k-500k after finishing 400k-450k, and then he will do 600k-650k if he has read Wolfgang's page.[/QUOTE]
Are these results available? They don't seem to be in the database.

I have just completed bring 680-700K to 100 digits. I am now running the 18 numbers below 100K that are (or were, some are done) at <100 digits. After this, I'll probably move on to 660-680K.

schickel 2010-02-12 07:21

[QUOTE=frmky;205403]Are these results available? They don't seem to be in the database. [/QUOTE][URL="http://www.mersenneforum.org/showpost.php?p=200826&postcount=75"]See here[/URL]....

10metreh 2010-02-12 17:37

[QUOTE=frmky;205403]I have just completed bring 680-700K to 100 digits. I am now running the 18 numbers below 100K that are (or were, some are done) at <100 digits. After this, I'll probably move on to 660-680K.[/QUOTE]

Have you by any chance been working on the sequences at the start of the 600k-700k range?

(BTW: Steer clear of 675600 - it's mine. Although it's above 100 digits, it might look tempting.)

RobertS 2010-02-12 20:41

My bot brought up all 600-700k to 90 digits, and some to 100 digits.
Now it's joining the 800k project.
I'll try to announce its plans here more thoroughly.

frmky 2010-02-12 22:00

[QUOTE=10metreh;205492]Have you by any chance been working on the sequences at the start of the 600k-700k range?

(BTW: Steer clear of 675600 - it's mine. Although it's above 100 digits, it might look tempting.)[/QUOTE]

Nope, and will do. My list includes only those under 100 digits. :smile:

frmky 2010-03-20 08:38

600k-700k are all at >=100 digits. I've started at 900k.

10metreh 2010-03-20 11:29

[QUOTE=frmky;209001]600k-700k are all at >=100 digits. I've started at 900k.[/QUOTE]

Great work. Once that and Subproject #5 are done, then all of the aliquot sequences up to 1M except the 400k range (Wieb Bosma) will be above 100 digits. After that, we will be faced with the 1M-2M range, which is mostly at 71 digits with some ranges above that. Should we take that straight to 100 or do it in two parts (to 80 or 90 first)?

Mini-Geek 2010-03-20 11:44

[quote=10metreh;209016]Great work. Once that and Subproject #5 are done, then all of the aliquot sequences up to 1M except the 400k range (Wieb Bosma) will be above 100 digits. After that, we will be faced with the 1M-2M range, which is mostly at 71 digits with some ranges above that. Should we take that straight to 100 or do it in two parts (to 80 or 90 first)?[/quote]
I think going straight to 100 would be good. If we were to only go to 80 or 90 at first, I'd want people to reserve sequences in pre-determined batches, (e.g. a 1k range, e.g. all sequences starting between 1,000,000 and 1,000,999) because otherwise there will be a lot of extra work for us admins.

henryzz 2010-03-20 13:09

Where do we stop going upwards? I had always thought 1M but people seem to want to go further. I do think though if we go rid of the upto 100 digits drives then I think that we would lose customers or at least limit our growth as a project.

10metreh 2010-03-20 15:56

I think we should continue taking sequences to 100 digits because it produces faster results and more terminations, but it I think it will become boring within a few years and 110 digits will be the most popular height to take sequences to. By then we'll probably have started taking the 10k sequences to 120 digits...

smh 2010-03-21 08:35

[QUOTE=frmky;209001]600k-700k are all at >=100 digits. I've started at 900k.[/QUOTE]Are you starting at 900K and work your way up? I've been working in the 900K range for the last couple of months (all are >=92 digits) and would like to avoid duplication. ATM I'm doing shortest sequences first, but I can easily start working my way down from 1M.

frmky 2010-03-21 18:06

[QUOTE=smh;209089]Are you starting at 900K and work your way up? [/QUOTE]
I was wondering why so many were in the mid-to-high 90's. Yes, I've completed most of the 900-910K range. If you can work your way down, then we'll meet in the middle.

There are a number of sequences in this range that are wrong in the database, including 900606, 900648, 900708, 901872, 904776, 905190, 905784, and 906000.

frmky 2010-04-03 23:13

[QUOTE=smh;209089]I can easily start working my way down from 1M.[/QUOTE]

I've finished 900K-940K and am now working on 940K-950K. Should I stop there and leave the upper half for you, or would you prefer I continue until we meet?

10metreh 2010-04-04 06:56

I've moved the discussion about taking other ranges to 100 digits here because it wasn't really related to which range we should do for a new subproject (which we've already started now).

frmky 2010-04-17 05:52

900K-980K is done to 100 digits. smh, working down from 1M, is currently below 983K.

smh 2010-04-17 09:29

You can take 980K - 982K if you wish (except 980064).

I lost some resources so I'm not making much progress anymore.

frmky 2010-04-22 03:42

I've been running other projects for the past few days and just took a look at what's left. It looks as though you've made good progress. There's fewer than a dozen left, so I'll leave them to you.

Greebley 2010-05-13 15:10

Can we try once again to get the sequences not in the database to 100 digits? I know Bosma hasn't replied, but maybe if we offered to put the sequences in the database ourselves. All he would have to do is create a zip file with what he has and load up to sendspace or some such and we do the rest? If that doesn't work, try getting someone well known to ask him?

Otherwise, his work is useless for us and we might as well get the sequence up ourselves which would be a shame to waste the resources.

smh 2010-08-09 14:52

So, did anyone manage to contact Wieb Bosma?

If we can't get his data we might as well do it our selfs.

Greebley 2010-08-09 15:03

I was thinking maybe we could ask for the sequences themselves and then have us actually add them to the database. He might be willing to zip them up for us and put them on send space, or make them available for download via ftp.

Also someone with a name in the field might have better success. Not sure who would be willing to do it though.

If he doesn't have time for that, then I agree we do it ourselves.

10metreh 2010-08-09 16:52

I reckon that if Greg (frmky) is willing to redo 250k-400k on his cluster, that would be better than doing it as a forum subproject because it would allow us to get on with the 110 digits effort.

RobertS 2010-08-09 17:12

I brought up the range 250k-300k to the same level of WB (table A) already, now doing the same with 400k-430k.

10metreh 2010-08-09 20:03

Thanks! :smile:

unconnected 2010-11-12 08:15

I'm working with 4.0M-4.5M to 70 digits.

schickel 2010-12-10 04:08

Looks like we're making nice progress toward completing all sequences <1M.

Checking the [URL="ftp://ftp.frontiernet.net/pub/users/Aliquot/public_ftp/AllSeq.zip"]summary[/URL], there are only 700 sequences at less than 100 digits in the DB and someone has already starting filling things in. Checking back on the shorter ones with an eye toward starting with the low-hanging fruit, someone beat me there.

For example, 357372:[code]Was: 357372 982. sz 66 2^2 * 3 * 5 * 11 * 1950367 * 20411983 * 2776371679 * 7226979377272886465246019587170635363203
Now: 357372 1293. sz 97 2^2 * 7 * 151[/code]

Do we need to make this an official project or shall we leave it open as a free-for-all?

bchaffin 2010-12-10 17:16

RobertS was extending 300k-400k to 100 digits and said he expected to be done pretty soon. I'm extending 400k-500k to 100 digits and I don't think it will take more than a week or so to finish. So I don't think we need an official project.

RobertS 2010-12-14 10:51

[B]250,000-400,000[/B] are up to 100 digits
and now all files available in the DB!!!

bchaffin 2010-12-16 00:07

[QUOTE=RobertS;241761][B]250,000-400,000[/B] are up to 100 digits
and now all files available in the DB!!![/QUOTE]

That was almost true yesterday morning... now it really is. :smile:

Here are some stats and highlights from the 400k-500k range:

451 sequences extended to 100+ digits with a minimum 95-digit ecm'ed cofactor.

Four terminations (already reported):
478392: length 1567, max height 83
461430: length 2623, max height 100
471540: length 2177, max height 84
466560: length 2907, max height 97

One merge (already reported):
472836 reaches 99 digits, then decreases all the way to 150020.

Five sequences decreased to <20 digits (8 more <30 digits):
462474: min 9 digits
451506: min 10 digits
453798: min 11 digits
489216: min 12 digits
497214: min 15 digits

Six sequences extended by >2000 terms (15 more >1000 terms)
453798: added 5358 (:exclaim:) terms (min 11 digits): i8370 (size 120) = 2^2 * 7^2 * 547 * 673 * 46663 * c107
462474: added 3972 terms (min 9 digits): i4971 (size 100) = 2^2 * 7 * 5039 * c95
489216: added 3779 terms (min 12 digits): i5163 (size 104) = 2^2 * 3^2 * 7 * c102
451506: added 3755 terms (min 10 digits): i6012 (size 103) = 2^2 * 5 * 7 * 17 * c99
438966: added 2393 terms (min 38 digits): i3865 (size 104) = 2 * 3^2 * 29 * 41 * 43 * 919 * c95
469812: added 2187 terms (min 37 digits): i2952 (size 101) = 2 * 3 * c100

Andi47 2010-12-16 05:46

are you still working on 453798? Otherwise I'd like to reserve it.

bchaffin 2010-12-16 06:25

[QUOTE=Andi47;242117]are you still working on 453798? Otherwise I'd like to reserve it.[/QUOTE]

I'm not, but I think unconnected has it reserved (see [URL="http://www.mersenneforum.org/showthread.php?p=240931#post240931"]this post[/URL]).

unconnected 2010-12-16 09:23

Great work, [B]bchaffin[/B]!
Do you have a script which generates this stats?

unconnected 2010-12-16 09:25

[QUOTE=bchaffin;242121]I'm not, but I think unconnected has it reserved (see [URL="http://www.mersenneforum.org/showthread.php?p=240931#post240931"]this post[/URL]).[/QUOTE]
Yes, I've extended it to i8370. Now size 120 with 2^2*7^2 driver.

Andi47 2010-12-16 21:06

[QUOTE=unconnected;242137]Yes, I've extended it to i8370. Now size 120 with 2^2*7^2 driver.[/QUOTE]

Sorry, I have missed that. I didn't want to step onto your toes.

RobertS 2010-12-17 16:33

[QUOTE=bchaffin;242081]That was almost true yesterday morning... now it really is. :smile:
[/QUOTE]

This sentence is a bit confusing.

I have (re)done 250k-400k.
bchaffin has done 400k-500k to >100 digits.

And this means: All sequences below 1M are now > 100 digits! A nice milestone, I guess

bchaffin 2010-12-17 20:40

[QUOTE=RobertS;242306]This sentence is a bit confusing.
[/QUOTE]

Yep, that doesn't make any sense, does it? I think I must have read your post as "250k-500k". Anyway, yes, all open sequences <1M are now over 100 digits.

schickel 2011-02-15 11:13

I reworked the top post. Any typos that I missed?

10metreh 2011-02-15 13:52

[QUOTE=schickel;252557]I reworked the top post. Any typos that I missed?[/QUOTE]

Yes:

[QUOTE=schickel;166068][COLOR="Red"]Furthur[/COLOR] investigation by [URL="http://www.lafn.org/~ax810/aliquot.htm"]Clifford Stern[/URL] showed that it actually merges with [B]4788[/B] rather than [B]16100[/B].[/QUOTE]

Fixed.

RobertS 2011-08-11 09:31

[QUOTE=schickel;166068]The entire range of sequences with a starting number below [B]1,000,000[/B] has been calculated to a minimum height of 100 digits.
.[/QUOTE]
Now:
The entire range of sequences with a starting number below [B]1,000,000[/B] has been calculated to a minimum height of [B][COLOR=Blue]110[/COLOR][/B] digits.

Mini-Geek 2011-08-18 21:57

[QUOTE=RobertS;268887]Now:
The entire range of sequences with a starting number below [B]1,000,000[/B] has been calculated to a minimum height of [B][COLOR=Blue]110[/COLOR][/B] digits.[/QUOTE]

It was slow in the coming, but I've now updated that, and removed this line:
[QUOTE]Various people and automated workers are advancing the rest of the sequences below 1,000,000 to 110 digits, but sequences below 110 digits are still open for reservation.[/QUOTE]Anyone know for sure that it'd make sense to put this back in, but with "120 digits"? I'd think so, but not sure.

schickel 2011-08-29 03:47

[QUOTE=Mini-Geek;269455]It was slow in the coming, but I've now updated that, and removed this line:
Anyone know for sure that it'd make sense to put this back in, but with "120 digits"? I'd think so, but not sure.[/QUOTE]It's fine as it is. I don't know exactly what I meant with this sentnence....it was making sense when I wrote it.

I think I meant that there was a general, undirected effort going on to extend everything to 110, but not to worry about jumping in to reserve anything that was not specifically reserved that looked to be interesting....or something like that.

RichD 2011-09-13 23:56

There doesn't seem to be any interest in aliquot sequences above 1 Mil at this time. Additionally, there is a BOINC project called YAFU developed by [B]yoyo[/B] devoted as a factorDB worker to factor composites in the (current) range of C80-C95.

So I have a short program which I run from time to time to keep the queues somewhat filled with composites from these sequences. You can see my post [URL="http://mersenneforum.org/showthread.php?p=271667"]here[/URL] in the YAFU thread.

Let me know if I am out of line.

RichD.

schickel 2011-09-15 08:54

[QUOTE=RichD;271672]There doesn't seem to be any interest in aliquot sequences above 1 Mil at this time. Additionally, there is a BOINC project called YAFU developed by [B]yoyo[/B] devoted as a factorDB worker to factor composites in the (current) range of C80-C95.

So I have a short program which I run from time to time to keep the queues somewhat filled with composites from these sequences. You can see my post [URL="http://mersenneforum.org/showthread.php?p=271667"]here[/URL] in the YAFU thread.

Let me know if I am out of line.

RichD.[/QUOTE]Not really no interest, as such, just more keeping the project managable right now. I don't know how many unique sequences there are between 1M and 2M, say, but at this point, there is no need to go above 1M to keep us occupied with work.

Besides, if we started working up above 1M, most of the impatient people (cf. RDS and [I]instant gratification[/I]) would go haring off to work ever increasing ranges above 1M in search of the low hanging fruit....

As far as keeping the factorDB workers occupied, that's a good goal, but at some point the composites will run out unless someone spams the DB with tons of small numbers again.... The natural next step in this process is to work out a distributed NFS project so that the bigger numbers could be tackled. yoyo is currently working with bsquared to get NFS workling using YAFU through the BOINC wrapper to get that started....I don't know what his ceiling is going to be, but if he can get some horsepower running there, they should be able to start churning through the numbers.

TL;DR, no, you're not out of line, and as long as you don't spam the DB too heavily, you do help keep the yoyo factorers busy.....which is good. I find it hard to turn any of my PCs off because I keep thinking of all the cycles that are potentially going to be wasted while they're dark.

RichD 2011-09-15 12:11

I'm really not following the sequences that close. I'm keeping the YAFU workers busy and entertained until [B]yoyo[/B] can roll out the NFS code.

At that point I will stop *pinging* so that higher composites will be worked.
(Unless someone wants me to continue.) :)

kar_bon 2012-09-10 11:17

I just got an email by W.Crayaufmüller wondering what happend to 495360.

This Seq is neither listed in Franks summary list [url=ftp://ftp.frontiernet.net/pub/users/aliquot/AllSeq.zip]here[/url] (April 2012) nor in the new page by Dubslow [url=http://dubslow.tk/aliquot/AllSeq.html]here[/url].

Are there any terminations (no, seems not by FactorDB) or merges?

In [url=http://www.mersenneforum.org/showpost.php?p=241016&postcount=150]Dec.2010[/url] this seq was missing the first time.

Dubslow 2012-09-10 14:20

[QUOTE=kar_bon;310955]I just got an email by W.Crayaufmüller wondering what happend to 495360.

This Seq is neither listed in Franks summary list [url=ftp://ftp.frontiernet.net/pub/users/aliquot/AllSeq.zip]here[/url] (April 2012) nor in the new page by Dubslow [url=http://dubslow.tk/aliquot/AllSeq.html]here[/url].

Are there any terminations (no, seems not by FactorDB) or merges?

In [url=http://www.mersenneforum.org/showpost.php?p=241016&postcount=150]Dec.2010[/url] this seq was missing the first time.[/QUOTE]

Interesting.

I'll add it in :smile:

That makes (exactly) 9225 sequences total un-terminated with leader < 1,000,000.

schickel 2012-09-10 16:22

[QUOTE=kar_bon;310955]I just got an email by W.Crayaufmüller wondering what happend to 495360.

This Seq is neither listed in Franks summary list [url=ftp://ftp.frontiernet.net/pub/users/aliquot/AllSeq.zip]here[/url] (April 2012) nor in the new page by Dubslow [url=http://dubslow.tk/aliquot/AllSeq.html]here[/url].

Are there any terminations (no, seems not by FactorDB) or merges?

In [url=http://www.mersenneforum.org/showpost.php?p=241016&postcount=150]Dec.2010[/url] this seq was missing the first time.[/QUOTE]I'm not sure what happened there. We synced up our counts back then, but somehow between then and now I used an old version of the list that didn't have it on there.

Sorry for the false alarm! (I've ironed it out with Wolfgang, and I'll make sure that I upload an updated list to my FTP site when I finish the current effort to get everything updated....)

Dubslow 2012-09-10 18:18

[QUOTE=schickel;311002]I'll make sure that I upload an updated list to my FTP site when I finish the current effort to get everything updated....)[/QUOTE]
Umm...

[quote]If you'd like to have the basic information available in the old AllSeq.txt format (to e.g. perform an analysis with grep, etc.), you can find that [URL="http://rechenkraft.net/aliquot/AllSeq.txt"]here[/URL].[/quote]

schickel 2012-09-10 18:34

[QUOTE=Dubslow;311018]Umm...[/QUOTE]You're right....I forgot you had that available. (But I'm still going to update my list locally, since it serves the dual purpose of keeping my local cache of sequences up to date [just in case....])

Dubslow 2012-09-10 18:43

[QUOTE=schickel;311022]You're right....I forgot you had that available. (But I'm still going to update my list locally, since it serves the dual purpose of keeping my local cache of sequences up to date [just in case....])[/QUOTE]

:tu: Always a great idea :smile:

LaurV 2017-03-07 06:26

(sorry for necro-posting, but we do not have a thread for aliquots status/progress reports, neither a "happy ali me", hehe)

Regained the DD for [URL="http://factordb.com/sequences.php?se=1&aq=613068&action=range&fr=2510&to=2520"]613068 [/URL]
:party:

Sergiosi 2017-07-30 05:38

Project 450
 
More than 5 years after "Project 400" had been completed, all aliquot sequences < 1M are now at i >= 450.

LaurV 2018-03-21 13:31

Got the DD for the "broken" 72708, if lucky, we will have no broken seq. :razz:

Aillas 2019-12-12 07:54

1866192 broken ?
 
When running aliqueit_win64.exe on seq 1866192, I've got this error

Verifying index 3835...
ERROR: @index 3835: value != sigma - n

The current index on FactorDB is 4025

gd_barnes 2020-04-06 06:41

Can someone give a general status for sequences in the range of 3M to 10M ? Thanks.

ugly2dog 2020-04-08 02:22

3000060-4999980 [19169 open sequences] have been taken to at least 100 digits.
I haven't done anything thorough above 5M. Just random sequences.
Older post(s) hint suggest 5M-10M were taken to 70 or 80 digits.

gd_barnes 2020-04-08 03:44

I found ~10 random sequences > 8000000 that had not been searched at all by manually going through the FDB. I ran them to > 80 digits. I do not know an easy way to do an automated scan of the FDB to find sequences that have not been run at all.


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