P-1: poorly P-1'd exponents that need redoing

James Heinrich · 2006-08-27, 18:44

These exponents have been P-1'd before, but with a poor choice of B1/B2 such that they should be reprocessed (as originally factored they had <0.5% chance of finding a factor, instead of the normal 3-5%). Most of them are in higher ranges than Mersenne-aries is currently working on. If you want to work on some of these, post which ones you're claiming and I'll edit the available list. Also note that most (if not all) of these have not yet had a L-L test performed on them yet, so there is a higher-than-normal chance of finding a factor in these (compared to the rest of Mersenne-aries work).

As always, please submit P-1 results when completed to http://mersenne-aries.sili.net
Note: any trial-factoring work done on these exponents (taking them up to ~68 bits by default) must be manually submitted to George. I'm trial-factoring these exponents up to 68 bits, so by the time they're claimed there shouldn't be any TF left to do.

See next message for the actual exponents list.

James Heinrich · 2006-08-27, 18:45

Code:

no work currently available, check back later

cheesehead · 2006-08-28, 11:36

Have you checked with Lone Mersenne Hunters for active TF assignments in the 400xxxxx and other ranges?

For instance, exponents 40016507 and 40024489 were listed with P-1 limits of 30,4000000 in the August 14 PMINUS1.txt, but were factored by August 25.

James Heinrich · 2006-08-28, 11:53

I based my data on whatever last night's status files contained. My list doesn't have either of those exponents. LMH doesn't claim to have any ongoing work that would eliminiate candidates in either of the above primary ranges. I'll update these lists whenever I generate new data files.

jasong · 2006-08-30, 21:45

I'm taking the first 3 in the first post for testing purposes. If someone could give me an equation where I can approximate how long a p-1 at a certain range would take, I would really appreciate it.

If that information is easily found, ignore my request, I like to jump in with both feet :)
Edit:Never mind, the time, according to Prime95, is about 50hrs15min per exponent.

Please tell me when these are needed so I can reserve accordingly.

Edit2:After reviewing the thread,"Status of P-1," it seems evident that I am way out in front of the LLing pack, so I will reserve an additional 7 numbers, meaning I have reserved the first 10 in the first post.

Edit3 by James Heinrich:
These are the 10 exponents you get to play with (removed from the above list):

Code:

Pfactor=40013669,63,0
Pfactor=40013681,63,0
Pfactor=40013759,63,0
Pfactor=40013797,63,0
Pfactor=40013803,63,0
Pfactor=40013843,63,0
Pfactor=40013917,63,0
Pfactor=40013957,63,0
Pfactor=40013999,63,0
Pfactor=40014067,63,0

James Heinrich · 2006-09-03, 13:49

I'll claim these exponents for testing:

Code:

Pfactor=36000109,67,0
Pfactor=50000059,62,0
Pfactor=55000031,62,0
Pfactor=69100037,63,0
Pfactor=69100051,63,0

Done:

Code:

M36000109 completed P-1, B1=450000, B2=13162500, E=6, Wc1: A3BBC588
M50000059 completed P-1, B1=620000, B2=27900000, Wc1: 0CCCA39A
M55000031 completed P-1, B1=675000, B2=29750000, Wc1: 8F3A7092
M69100037 completed P-1, B1=835000, B2=37366250, Wc1: F9F297DD
M69100051 completed P-1, B1=810000, B2=31185000, Wc1: FA2A44F5

S00113 · 2006-09-04, 09:14

I'll grab these:

Code:

Pfactor=40014103,63,0
Pfactor=40014127,63,0
Pfactor=40014151,63,0
Pfactor=40014157,63,0
Pfactor=40014199,63,0
Pfactor=40014253,63,0
Pfactor=40014269,63,0
Pfactor=40014283,63,0
Pfactor=40014313,63,0
Pfactor=40014329,63,0

James Heinrich says: acknowledged, removed from above list

moo · 2006-09-04, 17:24

I know we have finished all those in lmh to at least like 32 bits mabey more. Talk you yxine and anything in the higher 500m range ask me because i can get you results for all those.

jasong · 2006-09-04, 19:14

I've discovered that Prime95 isn't taking into account a program I run which intermittently takes up a lot of cycles. I've decided to turn in the residue for Pfactor=40013669,63,0 and move on to something a little faster.

Sorry for holding up progress.

Here's the one's I didn't complete:

Pfactor=40013681,63,0
Pfactor=40013759,63,0
Pfactor=40013797,63,0
Pfactor=40013803,63,0
Pfactor=40013843,63,0
Pfactor=40013917,63,0
Pfactor=40013957,63,0
Pfactor=40013999,63,0
Pfactor=40014067,63,0

James Heinrich says: acknowledged, returned these to the pool

patrik · 2006-09-17, 08:02

I'll take these. Starting in a few days when the current double-check finishes.

Code:

Pfactor=40013681,63,0
Pfactor=40013759,63,0
Pfactor=40013797,63,0
Pfactor=40013803,63,0
Pfactor=40013843,63,0
Pfactor=40013917,63,0
Pfactor=40013957,63,0
Pfactor=40013999,63,0
Pfactor=40014067,63,0
Pfactor=40014407,63,0

James Heinrich · 2006-09-28, 23:56

Claimed by me:

Code:

Pfactor=40024541,63,0
Pfactor=40024547,63,0
Pfactor=40024559,63,0
Pfactor=40024591,63,0
Pfactor=40024619,63,0
Pfactor=40024631,63,0
Pfactor=40024637,63,0
Pfactor=40024693,63,0
Pfactor=40024729,63,0
Pfactor=40024757,63,0

2006-08-27, 18:44	#1
James Heinrich "James Heinrich" May 2004 ex-Northern Ontario 3270₁₀ Posts	P-1: poorly P-1'd exponents that need redoing These exponents have been P-1'd before, but with a poor choice of B1/B2 such that they should be reprocessed (as originally factored they had <0.5% chance of finding a factor, instead of the normal 3-5%). Most of them are in higher ranges than Mersenne-aries is currently working on. If you want to work on some of these, post which ones you're claiming and I'll edit the available list. Also note that most (if not all) of these have not yet had a L-L test performed on them yet, so there is a higher-than-normal chance of finding a factor in these (compared to the rest of Mersenne-aries work). As always, please submit P-1 results when completed to http://mersenne-aries.sili.net Note: any trial-factoring work done on these exponents (taking them up to ~68 bits by default) must be manually submitted to George. I'm trial-factoring these exponents up to 68 bits, so by the time they're claimed there shouldn't be any TF left to do. See next message for the actual exponents list. Last fiddled with by James Heinrich on 2007-09-18 at 10:31

2006-08-27, 18:45	#2
James Heinrich "James Heinrich" May 2004 ex-Northern Ontario 2×3×5×109 Posts	Code: no work currently available, check back later Last fiddled with by James Heinrich on 2007-09-19 at 10:03

2006-08-28, 11:36	#3
cheesehead "Richard B. Woods" Aug 2002 Wisconsin USA 2²×3×641 Posts	Have you checked with Lone Mersenne Hunters for active TF assignments in the 400xxxxx and other ranges? For instance, exponents 40016507 and 40024489 were listed with P-1 limits of 30,4000000 in the August 14 PMINUS1.txt, but were factored by August 25. Last fiddled with by cheesehead on 2006-08-28 at 11:37

2006-08-30, 21:45	#5
jasong "Jason Goatcher" Mar 2005 6661₈ Posts	I'm taking the first 3 in the first post for testing purposes. If someone could give me an equation where I can approximate how long a p-1 at a certain range would take, I would really appreciate it. If that information is easily found, ignore my request, I like to jump in with both feet :) Edit:Never mind, the time, according to Prime95, is about 50hrs15min per exponent. Please tell me when these are needed so I can reserve accordingly. Edit2:After reviewing the thread,"Status of P-1," it seems evident that I am way out in front of the LLing pack, so I will reserve an additional 7 numbers, meaning I have reserved the first 10 in the first post. Edit3 by James Heinrich: These are the 10 exponents you get to play with (removed from the above list): Code: Pfactor=40013669,63,0 Pfactor=40013681,63,0 Pfactor=40013759,63,0 Pfactor=40013797,63,0 Pfactor=40013803,63,0 Pfactor=40013843,63,0 Pfactor=40013917,63,0 Pfactor=40013957,63,0 Pfactor=40013999,63,0 Pfactor=40014067,63,0 Last fiddled with by James Heinrich on 2006-08-30 at 23:43

2006-09-04, 19:14	#9
jasong "Jason Goatcher" Mar 2005 6661₈ Posts	I've discovered that Prime95 isn't taking into account a program I run which intermittently takes up a lot of cycles. I've decided to turn in the residue for Pfactor=40013669,63,0 and move on to something a little faster. Sorry for holding up progress. Here's the one's I didn't complete: Pfactor=40013681,63,0 Pfactor=40013759,63,0 Pfactor=40013797,63,0 Pfactor=40013803,63,0 Pfactor=40013843,63,0 Pfactor=40013917,63,0 Pfactor=40013957,63,0 Pfactor=40013999,63,0 Pfactor=40014067,63,0 James Heinrich says: acknowledged, returned these to the pool Last fiddled with by James Heinrich on 2006-09-05 at 12:52

2006-08-28, 11:53	#4
James Heinrich "James Heinrich" May 2004 ex-Northern Ontario 2×3×5×109 Posts	I based my data on whatever last night's status files contained. My list doesn't have either of those exponents. LMH doesn't claim to have any ongoing work that would eliminiate candidates in either of the above primary ranges. I'll update these lists whenever I generate new data files.

2006-09-04, 17:24	#8
moo Jul 2004 Nowhere 809 Posts	I know we have finished all those in lmh to at least like 32 bits mabey more. Talk you yxine and anything in the higher 500m range ask me because i can get you results for all those.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Coordination thread for redoing P-1 factoring	ixfd64	Lone Mersenne Hunters	80	2021-01-19 17:17
CUDALucas not redoing iterations with larger FFT	patrik	GPU Computing	2	2014-09-12 00:56
re-doing "poorly P-1 factored" exponents	ixfd64	PrimeNet	9	2013-01-07 19:51
Redoing work?	MooMoo2	Riesel Prime Search	2	2010-09-15 17:33
5.98M to 6.0M: redoing factoring to 62 bits	GP2	Lone Mersenne Hunters	0	2003-11-19 01:30