Factoring database - Page 62

10metreh · 2010-01-21, 07:25

Quote:

Originally Posted by Batalov

Otherwise, it is too painful to check all the vandalized sequences. There's thousands of them.

Literally? (I wouldn't think so...)

Mini-Geek · 2010-01-21, 13:52

Quote:

Originally Posted by 10metreh

Literally? (I wouldn't think so...)

Considering the link, I'd say no. Most definitely not literally.
I just hope there's a log of what this guy set prime...

RichD · 2010-01-21, 22:27

Quote:

Originally Posted by Mini-Geek

I just hope there's a log of what this guy set prime...

Realistically, I can't imagine anybody having a need to set a number prime. (Well, maybe one or two people here.) So if there is a log, it's all his...

Batalov · 2010-01-22, 00:17

On a brighter note, let it be known that Syd had factored 6*10^242+1

Mini-Geek · 2010-01-22, 02:18

Quote:

Originally Posted by RichD

Realistically, I can't imagine anybody having a need to set a number prime. (Well, maybe one or two people here.)

I think the only times I've used it are on easy PRPs (under about 200 digits) taking a bit longer to verify than I'd like (yes, I checked it first), and on large numbers (over about 1000 digits) where the DB had it as Unknown and I knew it was PRP or prime.

Batalov · 2010-01-22, 02:23

I did use it a couple of times on 3-4K digit primes which I certified with Primo.

Andi47 · 2010-01-24, 07:44

816k numbers in the work queue, number quickly dropping - I guess Syd might have queued all primes for a re-check to sort out the fals ones?

Mini-Geek · 2010-01-24, 13:34

Quote:

Originally Posted by Andi47

816k numbers in the work queue, number quickly dropping - I guess Syd might have queued all primes for a re-check to sort out the fals ones?

"Work queued 790699"
refresh
"Work queued 791051"
Hmm...

10metreh · 2010-01-24, 18:25

Quote:

Originally Posted by Mini-Geek

"Work queued 790699"
refresh
"Work queued 791051"
Hmm...

Now "Work queued 888100"...

henryzz · 2010-01-24, 19:55

Quote:

Originally Posted by 10metreh

Now "Work queued 888100"...

lets hope this isnt a measure of how many false primes it finds and then tries basic factoring techiniques on

wblipp · 2010-01-25, 08:26

Pascal's Odd Perfect Number search has many factors for p^q-1 that are not yet in Brent's tables nor the database. Of course even more of these factors are already in both repositories. I've manually added about a dozen missing factors to the database in the last few days, but it's tedious. Is there a way to scoop these all up and find the new factors?

R. Gerbicz has pointed out there is a least one factor in the database that is not in Pascal's list nor Brent's table. I haven't found any others in my manual comparison process, but that is also tedious. Are these factors automatically submitted to Richard Brent? Richard has not updated his factors table (for a^n +/- 1 with both a and n < 10,000) since September, so they might be "in process." Even if Richard gets the factors, Pascal wouldn't find any database factors for bases > 10,000. Is there some way to automatically get all new "factors of interest" for Pascal - or perhaps all the known factors and let Pascal figure out which are new?

http://www.lri.fr/~ochem/opn/checkfacts.txt

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2010-01-22, 00:17	#675
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 9,497 Posts	On a brighter note, let it be known that Syd had factored 6*10^242+1

2010-01-22, 02:23	#677
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 9,497 Posts	I did use it a couple of times on 3-4K digit primes which I certified with Primo.

2010-01-24, 07:44	#678
Andi47 Oct 2004 Austria 2×17×73 Posts	816k numbers in the work queue, number quickly dropping - I guess Syd might have queued all primes for a re-check to sort out the fals ones?

2010-01-25, 08:26	#682
wblipp "William" May 2003 New Haven 2·7·13² Posts	Pascal's Odd Perfect Number search has many factors for p^q-1 that are not yet in Brent's tables nor the database. Of course even more of these factors are already in both repositories. I've manually added about a dozen missing factors to the database in the last few days, but it's tedious. Is there a way to scoop these all up and find the new factors? R. Gerbicz has pointed out there is a least one factor in the database that is not in Pascal's list nor Brent's table. I haven't found any others in my manual comparison process, but that is also tedious. Are these factors automatically submitted to Richard Brent? Richard has not updated his factors table (for a^n +/- 1 with both a and n < 10,000) since September, so they might be "in process." Even if Richard gets the factors, Pascal wouldn't find any database factors for bases > 10,000. Is there some way to automatically get all new "factors of interest" for Pascal - or perhaps all the known factors and let Pascal figure out which are new? http://www.lri.fr/~ochem/opn/checkfacts.txt