P-1: Block of 73: 27.20-27.29M
 

These exponents have been LL-tested at least once, but without a matching double-check. They have not been P-1 tested yet.

Put this at the start of your worktodo.ini file:

Pfactor=27200477,67,1
Pfactor=27200497,67,1
Pfactor=27203317,67,1
Pfactor=27204511,67,1
Pfactor=27206029,67,1
Pfactor=27206981,67,1
Pfactor=27208217,67,1
Pfactor=27208807,67,1
Pfactor=27211267,67,1
Pfactor=27212363,67,1
Pfactor=27215077,67,1
Pfactor=27215777,67,1
Pfactor=27217207,67,1
Pfactor=27218869,67,1
Pfactor=27219047,67,1
Pfactor=27219421,67,1
Pfactor=27220229,67,1
Pfactor=27221153,67,1
Pfactor=27221713,67,1
Pfactor=27222473,67,1
Pfactor=27223211,67,1
Pfactor=27224959,67,1
Pfactor=27225001,67,1
Pfactor=27225431,67,1
Pfactor=27226403,67,1
Pfactor=27227129,67,1
Pfactor=27227441,67,1
Pfactor=27228529,67,1
Pfactor=27228863,67,1
Pfactor=27228979,67,1
Pfactor=27229577,67,1
Pfactor=27229721,67,1
Pfactor=27230263,67,1
Pfactor=27231679,67,1
Pfactor=27234521,67,1
Pfactor=27236711,67,1
Pfactor=27236893,67,1
Pfactor=27237191,67,1
Pfactor=27238069,67,1
Pfactor=27238657,67,1
Pfactor=27242947,67,1
Pfactor=27244409,67,1
Pfactor=27246173,67,1
Pfactor=27253477,67,1
Pfactor=27255707,67,1
Pfactor=27261977,67,1
Pfactor=27264059,67,1
Pfactor=27264241,67,1
Pfactor=27265081,67,1
Pfactor=27267497,67,1
Pfactor=27269519,67,1
Pfactor=27269969,67,1
Pfactor=27271271,67,1
Pfactor=27275473,67,1
Pfactor=27277829,67,1
Pfactor=27280247,67,1
Pfactor=27280273,67,1
Pfactor=27282859,67,1
Pfactor=27283307,67,1
Pfactor=27284801,67,1
Pfactor=27286313,67,1
Pfactor=27290183,67,1
Pfactor=27290371,67,1
Pfactor=27290891,67,1
Pfactor=27291727,67,1
Pfactor=27292813,67,1
Pfactor=27293521,67,1
Pfactor=27297383,67,1
Pfactor=27297859,67,1
Pfactor=27297899,67,1
Pfactor=27298471,67,1
Pfactor=27298603,67,1
Pfactor=27299341,67,1

Post here to claim this set.

When you're finished, manually check in your results at [url]http://mersenne-aries.sili.net[/url] [b]and[/b] post your results here as well (preferrably include all results as an attached text file, and (optional) also quote found factors in message body).

I nominate exponent 28000087 for addition to this list:

Pfactor=28000087,67,0

[Note the ",0" at the end!]

It's been P-1ed to only the ridiculously low bound B1 = B2 = 30.

Also, it apparently hasn't been successfully L-Led even once (hence the ",0"), nor is it currently assigned for L-L by PrimeNet, so a factorization would save [I]two[/I] L-Ls. [BTW, how did it arrive at that unusual status? PrimeNet assigned that neighborhood for first-time L-L a while ago. Perhaps someone needs to make sure it's PrimeNetted after being sufficiently P-1ed.]

My guess is that someone once ran a worktodo line of just "Pminus1=28000087" (1) as a test of Prime95's assignment of default limits B1 = B2 = 30 [shucks, maybe that was [I]me[/I] a long time ago], (2) as a mistake, or (3) in ignorance of the parameters.

28000087 in busy hands
 

I just wanted to P-1 28000087 and was assigned it for a first time LL test as well. P-1 results are negative with the standard prime95 settings :

[Sat Mar 10 03:23:54 2007]
UID: S485122/Q67-P3, M28000087 completed P-1, B1=345000, B2=9401250, E=6, Wc4: D4E08DB6

I gave it a lot of memory. I have one core doing P-1 only on XP 64 4GB machine : that way I can do all my P-1 with the maximum 3619 MB prime95 will allow.

Jacob

I have added these assignments to my worktodo file. Should be finished in August or so.

By the way, the title is wrong, it runs up to 27,29.

This range is done. Most of the results have been send to George and the few remaining will be send in a couple of weeks.