Certificate : For all indents and purposes - Page 30

MisterBitcoin · 2018-02-25, 21:35

Great, I´ll skip these numbers.

The next "cleanup" will run tomorrow after work.

chris2be8 · 2018-02-26, 16:37

I've finished running my script to prove 2^a-2^b-1 numbers prime. It proved 3961 numbers prime.

I also proved a few by hand. Some where N+1 needed algebraic factors adding. And a few numbers like 2^2909-2049 which the script didn't recognize. So I've done about 4000 in total.

The remaining 2^a-2^b-1 numbers mostly can't be proved that way (I've not checked them all manually). Some might be provable by N-1 if N-1 has a large PRP cofactor that can be proved by certificate.

Chris

chris2be8 · 2018-02-26, 18:01

A few thousand more PRPs like that have just appeared, ranging from 1000 to 2000+ digits. So I'll let my script loose again.

Chris

chris2be8 · 2018-02-27, 16:39

That run didn't do much. So I updated the script to add algebraic factors of N+1 before seeing if it could prove numbers prime. That has proved 280 numbers prime so far (I have one range missed because I hit 750 CPU seconds per hour still to do).

So let your certificates lose on the rest.

Chris

chris2be8 · 2018-02-27, 16:54

And another 8 proved prime in the last range.

I'll not do any more unless some more such numbers turn up.

Chris

chris2be8 · 2018-03-02, 17:01

Some more have turned up. I've re-run my script and proved 1127 numbers prime.

It appears that whoever is adding them is adding them in order of size so searching from the largest seen so far upwards will save time re-checking ones that can't be proved this way. I'll do that every few days until I stop finding new numbers.

Chris

chris2be8 · 2018-03-04, 16:26

And another 278 proved between 2410 and 2709 digits.

Chris

MisterBitcoin · 2018-03-06, 13:32

I´m back now. Just removed anything <700 digits. Now going up to 1300dd, roughly 500 numbers.
May take some time.
I´ll extend later to 1500dd.

chris2be8 · 2018-03-07, 16:46

Another 197 proved between 2700 and 3010 digits (plus a few done by hand).

Chris

EdH · 2018-03-07, 19:35

Quote:

Originally Posted by chris2be8

Another 197 proved between 2700 and 3010 digits (plus a few done by hand).

Chris

Thanks - all help appreciated. I've been dabbling elsewhere with my machines and the > 2500 dd PRPs are becoming overwhelming.

I'll be back running Primo soon, but I will need to upgrade, too. Unfortunately, upgrading Primo will probably mean editing all my scripts that run it everywhere.

MisterBitcoin · 2018-03-07, 23:15

Quote:

Originally Posted by EdH

Thanks - all help appreciated. I've been dabbling elsewhere with my machines and the > 2500 dd PRPs are becoming overwhelming.

I'll be back running Primo soon, but I will need to upgrade, too. Unfortunately, upgrading Primo will probably mean editing all my scripts that run it everywhere.

As stated yesterday by some-else on the primo thread, FactorDB works fine with the new primo version certificates.
Removed ~950 PRP´s <1550dd.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fixup Old Primo Certificate?	wblipp	FactorDB	1	2012-05-28 03:16
Invalid certificate?	IvanP	FactorDB	3	2012-05-11 12:17
Could Moore's law be purposely used for marketing purposes?	jasong	Science & Technology	10	2007-01-19 19:04
certificate of appreciation	Unregistered	Information & Answers	13	2004-04-28 06:24

2018-02-25, 21:35	#320
MisterBitcoin "Nuri, the dragon :P" Jul 2016 Good old Germany 376₁₆ Posts	Great, I´ll skip these numbers. The next "cleanup" will run tomorrow after work.

2018-02-26, 16:37	#321
chris2be8 Sep 2009 2426₁₀ Posts	I've finished running my script to prove 2^a-2^b-1 numbers prime. It proved 3961 numbers prime. I also proved a few by hand. Some where N+1 needed algebraic factors adding. And a few numbers like 2^2909-2049 which the script didn't recognize. So I've done about 4000 in total. The remaining 2^a-2^b-1 numbers mostly can't be proved that way (I've not checked them all manually). Some might be provable by N-1 if N-1 has a large PRP cofactor that can be proved by certificate. Chris

2018-02-26, 18:01	#322
chris2be8 Sep 2009 2·1,213 Posts	A few thousand more PRPs like that have just appeared, ranging from 1000 to 2000+ digits. So I'll let my script loose again. Chris

2018-02-27, 16:39	#323
chris2be8 Sep 2009 2×1,213 Posts	That run didn't do much. So I updated the script to add algebraic factors of N+1 before seeing if it could prove numbers prime. That has proved 280 numbers prime so far (I have one range missed because I hit 750 CPU seconds per hour still to do). So let your certificates lose on the rest. Chris

2018-02-27, 16:54	#324
chris2be8 Sep 2009 2·1,213 Posts	And another 8 proved prime in the last range. I'll not do any more unless some more such numbers turn up. Chris

2018-03-02, 17:01	#325
chris2be8 Sep 2009 2×1,213 Posts	Some more have turned up. I've re-run my script and proved 1127 numbers prime. It appears that whoever is adding them is adding them in order of size so searching from the largest seen so far upwards will save time re-checking ones that can't be proved this way. I'll do that every few days until I stop finding new numbers. Chris

2018-03-04, 16:26	#326
chris2be8 Sep 2009 2·1,213 Posts	And another 278 proved between 2410 and 2709 digits. Chris

2018-03-06, 13:32	#327
MisterBitcoin "Nuri, the dragon :P" Jul 2016 Good old Germany 1101110110₂ Posts	I´m back now. Just removed anything <700 digits. Now going up to 1300dd, roughly 500 numbers. May take some time. I´ll extend later to 1500dd.

2018-03-07, 16:46	#328
chris2be8 Sep 2009 2×1,213 Posts	Another 197 proved between 2700 and 3010 digits (plus a few done by hand). Chris