2008-11-02, 18:02 | #1 |
Nov 2008
2_{10} Posts |
Unknown result P1-factoring with v25.7
After changing from v25.6 to v25.7 I got results like this with P1-factoring:
[Sun Nov 02 16:38:55 2008] 24737*2^16045687+1 completed P-1, B1=130000, B2=2200000, E=6, Wd1: 9F17E134 With v25.6 I got: [Tue Oct 07 21:15:49 2008] 67607*2^15850467+1 completed P-1, B1=130000, B2=2200000, Wd1: 9A1AE89E What means E=6? |
2008-11-02, 20:13 | #2 |
P90 years forever!
Aug 2002
Yeehaw, FL
1E5F_{16} Posts |
It refers to Suyama's (sp?) extension to P-1 stage 2 factoring. If enough memory is available, prime95 can choose an E value greater than 2 which gives it a slightly better chance of finding a factor in stage 2 (by finding some factors above the B2 value).
In short, don't worry about it |
2008-11-02, 21:10 | #3 |
Nov 2008
2_{8} Posts |
Ok thanks for the explanation.
I putted some extra RAM in to speed up Stage 2 as well. That explains a lot. |
2008-11-04, 06:21 | #4 |
"Mark"
Feb 2003
Sydney
3×191 Posts |
Aha! That explains this recent result of mine:
Code:
P-1 found a factor in stage #2, B1=1000000, B2=40000000. UID: markr/mr7, M820643 has a factor: 279780507749146102291903 170464201698635157 = 3 x 5413 x 70297 x 149326579 Not that I check every one, but I hadn't seen a factor found by P-1 with one of k's factors > B2 before, so I was puzzled - until now. Thanks! Mark |
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