Other Factordb Problems - Page 12

henryzz · 2015-11-08, 00:20

Quote:

Originally Posted by schickel

I think I started to answer this earlier but got sidetracked or something. The only extant backup was a torrent that was seeded that consisted of a straight backup of just the number table, but none of the front-end code that make it worlds more useful than just a bunch of numbers thrown in a pile. I'm sure you could find the messages covering this topic near the bottom of the archive in the sub-forum. It was at least a couple of years ago....

Rings a bell. Can't find it now though.

pakaran · 2016-01-16, 20:41

Tens of thousands of very small PRPs (some under 20 digits) are piling up. FactorDB seems to be proving them, but very slowly (under 1/sec).

Stargate38 · 2016-01-23, 20:03

Could you please increase the DB number size limit to >75 megabits, or give me a workaround for it? Right now the limit is 62 megabits, and I'm unable to add M74207281 to it, no matter how I express it. That's never happened with any other Mersenne Prime.

Eventually, you'll have to remove that size limit altogether, because bigger primes will be found in the future, and I don't want anyone to be prevented from adding the current record prime.

Stargate38 · 2016-02-15, 19:52

Anyone know how long the DB will be down? It's been saying "Creating backup, offline for ~1 hour" for the past 3 hours.

yoyo · 2016-02-15, 20:03

It's back now.

Stargate38 · 2016-02-15, 20:35

Finally found a way to add M74207281 to the DB, but I had to add it as M37103641*(2^37103641)-1 (2*M74207281) and use "Report Factors" to add the 2 in (WARNING: Takes 26 seconds to come up).

Link: http://www.factordb.com/index.php?id...00000823570581

Dubslow · 2016-02-16, 07:16

Quote:

Originally Posted by Stargate38

Finally found a way to add M74207281 to the DB, but I had to add it as M37103641*(2^37103641)-1 (2*M74207281) and use "Report Factors" to add the 2 in (WARNING: Takes 26 seconds to come up).

Link: http://www.factordb.com/index.php?id...00000823570581

Did you ever wonder that the extreme difficulty of the matter might mean that it shouldn't be done?

Antonio · 2016-02-16, 09:08

Quote:

Originally Posted by Dubslow

Did you ever wonder that the extreme difficulty of the matter might mean that it shouldn't be done?

Don't do it if it's difficult, really?
How dare you say that in THIS forum?

Dubslow · 2016-02-16, 10:47

Quote:

Originally Posted by Antonio

Don't do it if it's difficult, really?
How dare you say that in THIS forum?

Merely suggesting it should be considered. And after all, there's a difference between difficult by human design and difficult by nature...

Antonio · 2016-02-16, 11:03

Quote:

Originally Posted by Dubslow

difficult by human design

Or, more likely, difficult because of human design (failings).

chris2be8 · 2016-06-02, 07:35

PRP 392^411*11+1 should be easy to prove by N-1. But factordb thinks 392^411*11 is 11*19 so N-1 is only 0.112% factored.

This probably needs Syd to delete 392^411*11 and add it again.

Chris

2016-01-23, 20:03	#124
Stargate38 "Daniel Jackson" May 2011 14285714285714285714 297₁₆ Posts	Could you please increase the DB number size limit to >75 megabits, or give me a workaround for it? Right now the limit is 62 megabits, and I'm unable to add M74207281 to it, no matter how I express it. That's never happened with any other Mersenne Prime. Eventually, you'll have to remove that size limit altogether, because bigger primes will be found in the future, and I don't want anyone to be prevented from adding the current record prime. Last fiddled with by Stargate38 on 2016-01-23 at 20:06 Reason: explanation

2016-02-15, 20:35	#127
Stargate38 "Daniel Jackson" May 2011 14285714285714285714 3×13×17 Posts	Finally found a way to add M74207281 to the DB, but I had to add it as M37103641(2^37103641)-1 (2M74207281) and use "Report Factors" to add the 2 in (WARNING: Takes 26 seconds to come up). Link: http://www.factordb.com/index.php?id...00000823570581 Last fiddled with by Stargate38 on 2016-02-15 at 20:48

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2016-01-16, 20:41	#123
pakaran Aug 2002 F9₁₆ Posts	Tens of thousands of very small PRPs (some under 20 digits) are piling up. FactorDB seems to be proving them, but very slowly (under 1/sec).

2016-02-15, 19:52	#125
Stargate38 "Daniel Jackson" May 2011 14285714285714285714 297₁₆ Posts	Anyone know how long the DB will be down? It's been saying "Creating backup, offline for ~1 hour" for the past 3 hours.

2016-02-15, 20:03	#126
yoyo Oct 2006 Berlin, Germany 617 Posts	It's back now.

2016-06-02, 07:35	#132
chris2be8 Sep 2009 2·1,039 Posts	PRP 392^41111+1 should be easy to prove by N-1. But factordb thinks 392^41111 is 1119 so N-1 is only 0.112% factored. This probably needs Syd to delete 392^41111 and add it again. Chris