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-   -   Report top-5000 primes for all k<=1001 (https://www.mersenneforum.org/showthread.php?t=9891)

odicin 2011-12-29 10:43

[URL="http://primes.utm.edu/primes/page.php?id=103808"]435*2^1077677-1[/URL] is prime.

gd_barnes 2011-12-30 18:38

Sashixi found:

569*2^1079392-1 is prime

vaughan 2012-01-07 13:55

475*2^1089627-1 is Prime!

vaughan 2012-01-09 06:07

503*2^1092022-1 is Prime!

vaughan 2012-01-13 07:13

451*2^1096999-1 is Prime!

vaughan 2012-01-17 02:56

573*2^1101398-1 is Prime!

vaughan 2012-01-19 22:18

469*2^1105345-1 is Prime!

mdettweiler 2012-01-21 16:23

The first prime of the 14th Drive: :grin:

[url=http://primes.utm.edu/primes/page.php?id=103974]819*2^1002205-1[/url]

mdettweiler 2012-01-23 15:17

Another one from the 14th:

[url=http://primes.utm.edu/primes/page.php?id=103980]735*2^1002509-1[/url]

kar_bon 2012-01-24 23:52

From 6k-Minidrive:
[url=http://primes.utm.edu/primes/page.php?id=103994]315*2^1741334-1[/url] is prime

MyDogBuster 2012-01-24 23:55

Nice one Karsten.:banana::bow:

183rd in Top5000.

kar_bon 2012-01-25 19:47

[QUOTE=MyDogBuster;287157]Nice one Karsten.:banana::bow:

183rd in Top5000.[/QUOTE]

I'm on the run now...

New place 183 is (not yet while writing) [url=http://primes.utm.edu/primes/page.php?id=104028]345*2^1742652-1[/url]:

Compared with 315*2^1741334-1:
Difference in n-values: 1318
Difference in k-values: 30

MyDogBuster 2012-01-26 04:16

[QUOTE]I'm on the run now...[/QUOTE]

Karsten's going to fill out the Top 200 by himself.:showoff:

gd_barnes 2012-01-26 09:52

Nice finds Karsten! :smile:

mdettweiler 2012-01-28 21:20

[url=http://primes.utm.edu/primes/page.php?id=104093]853*2^1003063-1[/url] is prime!

mdettweiler 2012-01-31 17:13

729*2^1003373-1 is confirmed prime on the 14th Drive

mdettweiler 2012-02-17 06:15

[url=http://primes.utm.edu/primes/page.php?id=104711]903*2^1006812-1[/url] is prime.

gd_barnes 2012-02-17 10:10

I guess it's pretty good to find 2 megabit primes < 2 hours apart, especially when they are your first megabit primes! :smile:

993*2^1006834-1 is prime
921*2^1006898-1 is prime

That's quite a trio for Max and I. 3 megabit primes in a range of n=86 on the 14th drive. That has to be some kind of record.

MyDogBuster 2012-02-17 17:03

[QUOTE]That's quite a trio for Max and I. 3 megabit primes in a range of n=86 on the 14th drive. That has to be some kind of record.[/QUOTE]

That is unusual. Nice job guys.:showoff::showoff:

Lennart 2012-02-18 22:25

Added [URL="http://primes.utm.edu/primes/page.php?id=104753"]104753[/URL] : 695*2^1008532-1 (303602 digits) is Prime

Lennart

Lennart 2012-02-19 01:19

Added [URL="http://primes.utm.edu/primes/page.php?id=104756"]104756[/URL] : 663*2^1009098-1 (303772 digits) isPrime


Lennart

Lennart 2012-02-19 11:58

Added [URL="http://primes.utm.edu/primes/page.php?id=104757"]104757[/URL] : 899*2^1010544-1 (304208 digits) isPrime

Lennart

Lennart 2012-02-19 18:53

Added 104806 : 947*2^1012854-1 (304903 digits) isPrime

Lennart

Lumiukko 2012-02-19 19:45

Added [URL="http://primes.utm.edu/primes/page.php?id=104758"]104758[/URL] : 811*2^1010419-1 (304170 digits) is prime.

--
Lumiukko

Lennart 2012-02-19 23:01

Added [URL="http://primes.utm.edu/primes/page.php?id=104818"]104818[/URL] : 669*2^1013592-1 (305125 digits) isPrime

Lennart

Lennart 2012-02-20 00:03

Added [URL="http://primes.utm.edu/primes/page.php?id=104819"]104819[/URL] : 691*2^1013875-1 (305210 digits)isPrime

Lennart

Lennart 2012-02-20 22:16

Added [URL="http://primes.utm.edu/primes/page.php?id=104859"]104859[/URL] : 727*2^1018709-1 (306665 digits) isPrime

Lennart

PCZ 2012-02-21 07:21

Added 795*2^1019049-1
Added 793*2^1019935-1

It's been a while since i submitted anything.

PCZ 2012-02-21 08:27

Please remove / edit my previous post.
both numbers appear to be composite.
795*2^1019049-1
793*2^1019935-1

I need to see which of my PC's tested these numbers.

Found the PC and have stopped the prpclients.
I Will retest all the pairs this box has processed.

gd_barnes 2012-02-21 09:15

829*2^1017747-1 is prime

gd_barnes 2012-02-21 09:17

[QUOTE=PCZ;290237]Please remove / edit my previous post.
both numbers appear to be composite.
795*2^1019049-1
793*2^1019935-1

I need to see which of my PC's tested these numbers.

Found the PC and have stopped the prpclients.
I Will retest all the pairs this box has processed.[/QUOTE]

Max and Dave,

We will somehow need to delete these pairs and primes out of the database so that we can add the tests with the correct residues back to it.

Brian,

Can you post the correct residues for these pairs so that we can get our database corrected? Thanks.


Gary

AMDave 2012-02-21 09:39

Interesting.
I have removed both pairs from the results and prime_list tables.
If someone can fire those two k&n pairs back into the queue we'll get a fresh look at them, or we can do them again by hand, I mean manually.

... can you imagine doing this by hand!? LOL

OR throw the residuals at me, but hard enough to make sure they stick. :P

gd_barnes 2012-02-21 09:47

[QUOTE=AMDave;290249]Interesting.
As requested I have removed both pairs from the results and prime_list tables.
If someone can fire those two k&n pairs back into the queue we'll get a fresh look at them.[/QUOTE]

That was quick. Thanks Dave.

Hum. I just thought of something. Before we can run the corrected pairs into the DB, we need to get those pairs and primes deleted out of our PRPnet server, else it won't accept the corrected (i.e. duplicated from its perspective) pairs and the server prime/pair counts will be messed up. Unfortunately I'm out of town at the moment and will be back late Friday. Max, if you have a few minutes sometime before Friday to delete those bad pairs out of the server, that would be excellent. Please make sure that the primes are deleted also. If you can't get to it before then, we'll just have to wait for the full correction until sometime on Sat.


Gary

PCZ 2012-02-21 10:42

1 Attachment(s)
Here is the list of pairs
I will redo them and send you the results so you have the correct residues.

AMDave 2012-02-21 12:18

Tops. Saved to my desktop.

mdettweiler 2012-02-21 19:42

Okay, I've deleted the two problem primes from the PRPnet server's database and re-inserted the respective candidates. They were promptly reassigned to two of Lennart's clients and should be returned within 10 minutes or so (composite, of course). I adjusted PRPnet's stats tallies appropriately as well. [I](Note: I adjusted the "primes found" counts for both PCZ and Free-DC but not the "tests performed" counts, since that would also involve messing with the points count and that would be a mess. Since he'll be re-testing the same candidates manually on a stable machine, the stats will still be accurate in the end.)[/I]

As for the rest of the candidates tested by PCZ's unstable machine, those would be a bit more tricky to delete; I deleted the two primes from the PRPnet database individually, i.e. by typing in each candidate name specifically. This, of course, would be impractical for a long list of candidates; and it isn't really necessary anyway since we're re-doing them manually, not through the PRPnet server.

Since the re-dos for the bad results will be done by the same user as before, fixing them in the main stats database should be fairly easy--once he completes the tests, we run a diff to compare the old and new results, and whichever residuals are different we fix with:
[I]update results set residual=[new] where k=[k] and n=[n];[/I]
respectively for each corrected residual--a MySQL script file with commands in the above format should be easy enough to whip up by a Perl script or the like. The end result will be that nothing changes except the residuals are now correct.

The only thing this doesn't take into account is the raw text results files from which the DB initially loaded the results--those will still have the incorrect residuals in them. This isn't too big a deal since they'll already be fixed in the DB, but if we did ever have to reload the entire DB from the results files (say, if it was somehow lost), we'd end up with the incorrect residuals. Dave, how do you think we should handle this?

henryzz 2012-02-21 22:09

Might be worth seeing if other results from the machine are affected before giving it too much thought. It is incredibly unlikely that two composite numbers would be found to be prime just from random residues.

mdettweiler 2012-02-22 06:12

[QUOTE=henryzz;290343]Might be worth seeing if other results from the machine are affected before giving it too much thought. It is incredibly unlikely that two composite numbers would be found to be prime just from random residues.[/QUOTE]
Yes, but I'm not sure if random residues are the sole factor in creating false-positive results; while I will admit I don't have any mathematical basis for such a claim, empirically, there are a lot of false primes that have been turned up over time, far more than would be expected if it was just a random 0 residue. (There's a thread at CRUS from a while back where we calculated how many tests it would take to crank out a random composite residue containing a 9-hexdigit string, and it was quite huge.) False primes seem to be a (somewhat) common type of bad result produced by unstable machines, so I'm thinking there must be something more to it that can "bias" the incorrect result toward positive in certain types of instability situations.

AMDave 2012-02-22 11:13

[QUOTE=mdettweiler;290302]Dave, how do you think we should handle this?[/QUOTE]
I can pull them from the files, no problems, but I think we should see what results PCZ comes back with from the other machine before I make permanent changes to the results files.

pinhodecarlos 2012-02-22 11:29

I think the NPLB server should automatically verify the primes found. If it is confirmed as prime then nothing happens, if it is confirmed as composite then the pair should go into the server to be tested again.

PCZ 2012-02-22 11:51

[QUOTE=AMDave;290436]I can pull them from the files, no problems, but I think we should see what results PCZ comes back with from the other machine before I make permanent changes to the results files.[/QUOTE]

Wait for my results to come back.

Could be that there were only the two false positives and the rest of the tests were OK.

Haven't finished quite yet, but so far it doesn't look too bad.
Another 12 hrs or so and they will be finished and the residues can be compared.

Lumiukko 2012-02-22 17:09

Added [URL="http://primes.utm.edu/primes/page.php?id=104945"]104945[/URL] : 741*2^1027639-1 (309354 digits) is prime.

--
Lumiukko

Lennart 2012-02-23 00:03

Added [URL="http://primes.utm.edu/primes/page.php?id=104956"]104956[/URL] : 727*2^1031225-1 (310433 digits)isPrime

Lennart

odicin 2012-02-23 06:31

Added [URL="http://primes.utm.edu/primes/page.php?id=104966"]104966[/URL] : 703*2^1031219-1 (310431 digits) is prime.

Odi

PCZ 2012-02-23 17:58

redone pairs
 
1 Attachment(s)
.

Lennart 2012-02-23 18:36

Added [URL="http://primes.utm.edu/primes/page.php?id=104975"]104975[/URL] : 783*2^1034775-1 (311502 digits) isPrime


Lennart

Lennart 2012-02-24 01:00

Added [URL="http://primes.utm.edu/primes/page.php?id=104994"]104994[/URL] : 641*2^1018986-1 (306749 digits) isPrime

Lennart

mdettweiler 2012-02-26 20:09

[url=http://primes.utm.edu/primes/page.php?id=105126]705*2^1052759-1[/url] is prime

gd_barnes 2012-02-27 19:17

833*2^1054916-1 is prime

PCZ 2012-02-27 21:38

895*2^1054515-1 is prime

vaughan 2012-03-01 23:23

945*2^1060963-1 is prime

PCZ 2012-03-02 00:05

675*2^1061510-1 is prime

PCZ 2012-03-02 19:27

859*2^1062379-1 is prime

PCZ 2012-03-03 15:29

839*2^1063280-1 is prime

Beyond 2012-03-06 00:35

871*2^1066551-1 (321067 digits)

mdettweiler 2012-03-08 06:27

[url=http://primes.utm.edu/primes/page.php?id=105416]635*2^1070166-1[/url] is prime

PCZ 2012-03-08 06:51

643*2^1069859-1 is prime

gd_barnes 2012-03-09 10:24

669*2^1071272-1 is prime

PCZ 2012-03-12 09:39

983*2^1076124-1 is prime

Neo 2012-03-12 16:52

603*2^1074059-1 is Prime!

Neo
AtP

PCZ 2012-03-13 21:54

653*2^1077990-1 is prime

gd_barnes 2012-03-13 22:35

957*2^1078712-1 is prime

gd_barnes 2012-03-14 21:50

Juhehe found 507*2^1127304-1 is prime

gd_barnes 2012-03-16 07:03

849*2^1081​951-1 is prime

AMDave 2012-03-16 08:42

[QUOTE=gd_barnes;293026]Juhehe found 507*2^1127304-1 is prime[/QUOTE]
Well done juhehe.
That's your first on the automated NPLB ports and stats.
We hope you get many more :smile:

gd_barnes 2012-03-16 17:34

867*2^1082206-1 is prime

mdettweiler 2012-03-17 05:38

[URL="http://primes.utm.edu/primes/page.php?id=105651"]933*2^1078926-1[/URL]
and
[URL="http://primes.utm.edu/primes/page.php?id=105652"]675*2^1080859-1[/URL]

are both prime :smile:

gd_barnes 2012-03-21 07:43

693*2^1088280-1 is prime

PCZ 2012-03-22 16:47

861*2^1089919-1 is prime

PCZ 2012-03-24 01:51

651*2^1091613-1 is prime

gd_barnes 2012-03-24 17:26

829*2^1088963-1 is prime
811*2^1089349-1 is prime
711*2^1090974-1 is prime

mdettweiler 2012-03-26 03:50

Two more from the 14th Drive:

Added [URL="http://primes.utm.edu/primes/page.php?id=105832"]105832[/URL] : 975*2^1085931-1 (326901 digits)
Added [URL="105833"]105833[/URL] : 675*2^1089273-1 (327907 digits)

:smile:

henryzz 2012-03-28 21:57

573*2^1128632-1 is Prime

gd_barnes 2012-03-31 05:58

635*2^1099854-1 is prime

gd_barnes 2012-04-01 16:58

Juhehe found 583*2^1128879-1 is prime.

gd_barnes 2012-04-08 23:50

945*2^1110626-1 is prime

gd_barnes 2012-04-10 17:36

705*2^1112418-1 is prime

PCZ 2012-04-15 16:23

777*2^1117120-1 is prime
825*2^1117738-1 is prime

PCZ 2012-04-17 04:40

627*2^1119114-1 is prime

PCZ 2012-04-17 07:21

707*2^1120218-1 is prime

mdettweiler 2012-04-18 04:12

I just got a flurry of emails from the port 2000 server reporting an impossibly amazing run of primes by PCZ (14 in very short succession!)--I'm assuming this is some kind of error? :huh:

Edit: Correction, make that 25 primes--I missed 11 of them in my previous count. Also, I just got a handful of fresh ones in my inbox. Is this an unstable computer going completely bonkers or something?

mdettweiler 2012-04-18 04:40

On a completely unrelated note, I have a prime of my own to report:

[URL="http://primes.utm.edu/primes/page.php?id=106369"]619*2^1117103-1[/URL]

PCZ 2012-04-18 07:28

Max
One of my machines has indeed gone a bit bonkers.
Fortunately it has only been running for a short time, around 6hrs.

I can see that is has only tested 128 candidates or so but it reportied around 40% of them prime.
Those pairs will be retested ASAP.

It is my only Bulldozer PC and i am tempted to throw it down a deep dark hole.

AMDave 2012-04-18 08:14

[QUOTE=PCZ;296711]It is my only Bulldozer PC and i am tempted to throw it down a deep dark hole.[/QUOTE]
nononono. please don't do that.
Bulldozer needs the optimized client to handle the vectors, but it has bugs.
We'll take this into email with Max and PCZ.

gd_barnes 2012-04-18 08:21

Brian,

Can you provide a list of the bad primes here. We need to have Dave remove them from the DB.


Thanks,
Gary

gd_barnes 2012-04-18 08:23

819*2^1120943-1 is prime

PCZ 2012-04-18 09:17

1 Attachment(s)
List of bad pairs attached

I have these pairs being reprocessed on another machine so i can give you good residues.
Will post them up in a few hours.

AMDave 2012-04-18 10:38

Awesome. Thanks.
Ignore my email. These posts & the file covers it. Ta.
Werkin.

ed - done.
I saved the patch just in case they come through again from the port db in the nightly batch.
If that happens we'll get the emails again, but we'll know to ignore them.

hehehehe. Lets see if Max can beat the clock. :D

AMDave 2012-04-18 11:27

The results are coming through again from the port db again on the hourly batch.
So we got the notifications again.

I need to leave these in the db until tomorrow when the port db won't send them through again.

No probs. Only a few disoriented electrons. Nothing that can't be fixed :)

PCZ 2012-04-18 11:56

1 Attachment(s)
Ok i have retested the 128 pairs which the BD made a mess off.

Strangely the residues actually match.
Well excluding where the BD decided to declare them prime. :(
I would have expected the residues to be corrupt but it appears not. !!

AMDave 2012-04-18 12:08

got it. thanks.

gd_barnes 2012-04-18 21:42

645*2^1122571-1 is prime
685*2^1123​361-1 is prime

The 2nd one appears to be the first prime of the rally! :-)

Beyond 2012-04-18 21:42

933*2^1122372-1 (337871 digits)

gd_barnes 2012-04-19 08:15

997*2^1124781-1 is prime

Lennart 2012-04-19 14:38

621*2^1127434-1 is Prime

Lennart

PCZ 2012-04-19 19:20

789*2^1128793-1 is prime

odicin 2012-04-20 15:28

[URL="http://primes.utm.edu/primes/page.php?id=106412"]875*2^1132454-1[/URL] is prime

Odi


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