20060827, 18:44  #1 
"James Heinrich"
May 2004
exNorthern Ontario
3×23×47 Posts 
P1: poorly P1'd exponents that need redoing
These exponents have been P1'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 35%). Most of them are in higher ranges than Mersennearies 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 LL test performed on them yet, so there is a higherthannormal chance of finding a factor in these (compared to the rest of Mersennearies work).
As always, please submit P1 results when completed to http://mersennearies.sili.net Note: any trialfactoring work done on these exponents (taking them up to ~68 bits by default) must be manually submitted to George. I'm trialfactoring 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 20070918 at 10:31 
20060827, 18:45  #2 
"James Heinrich"
May 2004
exNorthern Ontario
3×23×47 Posts 
Code:
no work currently available, check back later Last fiddled with by James Heinrich on 20070919 at 10:03 
20060828, 11:36  #3 
"Richard B. Woods"
Aug 2002
Wisconsin USA
17014_{8} 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 P1 limits of 30,4000000 in the August 14 PMINUS1.txt, but were factored by August 25. Last fiddled with by cheesehead on 20060828 at 11:37 
20060828, 11:53  #4 
"James Heinrich"
May 2004
exNorthern Ontario
3×23×47 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.

20060830, 21:45  #5 
"Jason Goatcher"
Mar 2005
5·701 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 p1 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 P1," 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 20060830 at 23:43 
20060903, 13:49  #6 
"James Heinrich"
May 2004
exNorthern Ontario
3·23·47 Posts 
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 Code:
M36000109 completed P1, B1=450000, B2=13162500, E=6, Wc1: A3BBC588 M50000059 completed P1, B1=620000, B2=27900000, Wc1: 0CCCA39A M55000031 completed P1, B1=675000, B2=29750000, Wc1: 8F3A7092 M69100037 completed P1, B1=835000, B2=37366250, Wc1: F9F297DD M69100051 completed P1, B1=810000, B2=31185000, Wc1: FA2A44F5 Last fiddled with by James Heinrich on 20061027 at 10:52 
20060904, 09:14  #7 
Dec 2003
D8_{16} Posts 
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 Last fiddled with by James Heinrich on 20060905 at 12:51 
20060904, 17:24  #8 
Jul 2004
Nowhere
809_{10} 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.

20060904, 19:14  #9 
"Jason Goatcher"
Mar 2005
5×701 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 20060905 at 12:52 
20060917, 08:02  #10 
"Patrik Johansson"
Aug 2002
Uppsala, Sweden
5^{2}×17 Posts 
I'll take these. Starting in a few days when the current doublecheck 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 
20060928, 23:56  #11 
"James Heinrich"
May 2004
exNorthern Ontario
3·23·47 Posts 
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 
Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Coordination thread for redoing P1 factoring  ixfd64  Lone Mersenne Hunters  80  20210119 17:17 
CUDALucas not redoing iterations with larger FFT  patrik  GPU Computing  2  20140912 00:56 
redoing "poorly P1 factored" exponents  ixfd64  PrimeNet  9  20130107 19:51 
Redoing work?  MooMoo2  Riesel Prime Search  2  20100915 17:33 
5.98M to 6.0M: redoing factoring to 62 bits  GP2  Lone Mersenne Hunters  0  20031119 01:30 