P-1: Block of 73: 27.20-27.29M

[James Heinrich]

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 http://mersenne-aries.sili.net and post your results here as well (preferrably include all results as an attached text file, and (optional) also quote found factors in message body).

[cheesehead]

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 two 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 me a long time ago], (2) as a mistake, or (3) in ignorance of the parameters.

[S485122]

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

[tha]

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

[tha]

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

[tha]

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.