Finessing the Aliquot reservation page to sequences above 1 million

yoyo · 2017-11-01, 16:09

Lets discuss how to enlarge the reservation page [1] to sequences above 10e6. I think it is time to enlarge the page to (as first step) 1.1 million.

What would be the best way to add such amount of Sequences? I do not know which sequences are not terminated.

yoyo

[1]: https://www.rechenkraft.net/aliquot/AllSeq.html

Dubslow · 2017-11-01, 18:08

If we enlarge, I vote for 2 million.

Not convinced we should, though.

yoyo · 2017-11-01, 18:14

It's not the question to which level we enlarge, the question is how we know which sequences are open? I wrote just 1.1 as first step.
Currently I check each sequence if it terminates or not.
Have a script which does it and sleeps a while if factordb limits are reached.

I'm currently at 1003000.

Batalov · 2017-11-01, 18:45

I am sure that this has already been done and discussed on this forum. (1e6 to 2e6 range)

One just needs to carefully read this subforum. If it sounds like work, - yes. It. Is! With careful reading one can save CPU years.

If you still want to do it from scratch, then you need to take a snapshot of all <10⁶ sequence's endpoints and check if/when your new sequence merges - immediately. It is extremely easy to do with FactorDB REST call (e.g. http://factordb.com/sequences.php?se...02&action=last , parse and check against known endpoints. Done!). Then such merges to be added to a separate table to be posted some place in this forum, but not to be exposed it in the system.You will have a few percent of all even numbers surviving this simple procedure.

Dubslow · 2017-11-01, 19:16

Quote:

Originally Posted by yoyo

It's not the question to which level we enlarge, the question is how we know which sequences are open?

This is not difficult. I very much believe the question is if or how much, not how. Such a slow going of a few dozen sequences an hour is quite literally a waste of time.

yoyo · 2017-11-01, 19:16

I use exactly this factorDB REST api to check the sequences and will post the merges we got so far.

ugly2dog · 2017-11-01, 19:42

Every open sequence from 1e6 to 2e6 has been taken up to at least 100 digits.
To the best of my knowledge there are 9449 open sequences, but with other people working on them, there may be more terminations/merges I don't know about.
Attached is what I am showing open.

Batalov · 2017-11-01, 20:04

à propos!

ChristianB · 2017-11-01, 20:32

The goal of this extension is to get some more "low hanging fruit" for the yafu@home project to keep the volunteers happy with some shorter work.

We could add the 9449 sequences by ugyl2dog to the reservation list, wait 2 to 3 days for the scripts to detect new terminations and merges and let yafu@home work on the remaining.

This would not make those sequences available for reservation through the forums, although this can be changed too I think.

We could at first add manual reservations if there are any. A newer thread here only lists reservations outside of this extension. With the exception of 10077696 which LaurV reserved (http://www.mersenneforum.org/showpos...05&postcount=3).

Dubslow · 2017-11-01, 20:52

Quote:

Originally Posted by ugly2dog

Every open sequence from 1e6 to 2e6 has been taken up to at least 100 digits.
To the best of my knowledge there are 9449 open sequences, but with other people working on them, there may be more terminations/merges I don't know about.
Attached is what I am showing open.

Thanks! Much work saved. Do you have information about sequences above 2e6? Out of curiosity more than anything.

ugly2dog · 2017-11-01, 21:16

Attached is what I have open in the 2e6-3e6 range.
Again all 9457 have been taken to at least 100 digit.
Same caveat as before.
I am currently showing 9601 open in the 3e6-4e6 range and 9634 in the 4e6-5e6 range.
I am still working in those range to get them all to 100 digits.

2017-11-01, 16:09	#1
yoyo Oct 2006 Berlin, Germany 659 Posts	Finessing the Aliquot reservation page to sequences above 1 million Lets discuss how to enlarge the reservation page [1] to sequences above 10e6. I think it is time to enlarge the page to (as first step) 1.1 million. What would be the best way to add such amount of Sequences? I do not know which sequences are not terminated. yoyo [1]: https://www.rechenkraft.net/aliquot/AllSeq.html

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2017-11-01, 18:08	#2
Dubslow Basketry That Evening! "Bunslow the Bold" Jun 2011 40<A<43 -89<O<-88 1110000110101₂ Posts	If we enlarge, I vote for 2 million. Not convinced we should, though.

2017-11-01, 18:14	#3
yoyo Oct 2006 Berlin, Germany 659 Posts	It's not the question to which level we enlarge, the question is how we know which sequences are open? I wrote just 1.1 as first step. Currently I check each sequence if it terminates or not. Have a script which does it and sleeps a while if factordb limits are reached. I'm currently at 1003000.

2017-11-01, 18:45	#4
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 23513₈ Posts	I am sure that this has already been done and discussed on this forum. (1e6 to 2e6 range) One just needs to carefully read this subforum. If it sounds like work, - yes. It. Is! With careful reading one can save CPU years. If you still want to do it from scratch, then you need to take a snapshot of all <10⁶ sequence's endpoints and check if/when your new sequence merges - immediately. It is extremely easy to do with FactorDB REST call (e.g. http://factordb.com/sequences.php?se...02&action=last , parse and check against known endpoints. Done!). Then such merges to be added to a separate table to be posted some place in this forum, but not to be exposed it in the system.You will have a few percent of all even numbers surviving this simple procedure.

2017-11-01, 19:16	#6
yoyo Oct 2006 Berlin, Germany 659 Posts	I use exactly this factorDB REST api to check the sequences and will post the merges we got so far.

2017-11-01, 20:04	#8
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 3×7×479 Posts	à propos!

2017-11-01, 20:32	#9
ChristianB Apr 2013 Germany 2×3×53 Posts	The goal of this extension is to get some more "low hanging fruit" for the yafu@home project to keep the volunteers happy with some shorter work. We could add the 9449 sequences by ugyl2dog to the reservation list, wait 2 to 3 days for the scripts to detect new terminations and merges and let yafu@home work on the remaining. This would not make those sequences available for reservation through the forums, although this can be changed too I think. We could at first add manual reservations if there are any. A newer thread here only lists reservations outside of this extension. With the exception of 10077696 which LaurV reserved (http://www.mersenneforum.org/showpos...05&postcount=3).