P-1 coordination thread - discussion

[Joh14vers6]

I'll post here not to trash the other thread, but my range resulted in one factor, not two!
14920000 14921000 balachmar 1 [complete]

I can not see the factor in the stats. Is the factor big? Then post it here.

[glennpat]

I had posted that I had 2 factors in the range 15060000 15070000. Maybe it should of only really been 1. The factor 8058533177897161|24737*2^14910223+1 I turned in was new and saved to the data base, but I see today I did not show up in my stats. I looked in the stats for everyone and saw:

5189.734T 21181 15307772 3800310.858 Sat 12-Jul-2008 Mon 21-Jul-2008 35.000 PrimeGrid

Mine was found after the one PrimeGrid had found so it didn't really count for me.

[balachmar]

I can not see the factor in the stats. Is the factor big? Then post it here.

Too bad I only read this now. I don't think I have the values of the factor anymore...
And as far as I know the submission page accepted the factor...
mm strange...
Anyway, I'm getting a bit fed up with P-1 did a few like 40 lines of work and still no result... (As in points for the team and tests saved...)

[[DPC]Frentik]

Sorry if asked before but these are the steps I performed to do P-1 factoring and I want to make sure it's done properly

- Created account at www.seventeenorbust.com and joined my team there.
- downloaded latest prime95 version from www.mersenne.org
- reserved a range in the appropriate thread and saved it in the prime95 folder
- started prime95 and choose "join GIMPS" (then I had to fill in a username/email etc but i assume this is only used if you do mersenne prime finding? <- insecure on this part)
-stopped prime95, added the results.txt=fact.txt to the prime.ini file and restarted prime95.

It's running now and since its working on the first value from the worktodo.ini file I assume this part is correct so far.

Now when I find a factor I only have to submit it at www.seventeenorbust.com/sieve? And when the range is done, I'll post it in the coordination thread.

[Joe O]

If the factor is larger than 2^64 then you have to submit it here.

[Joh14vers6]

I switched over from prime v25.6 to v25.7.
Since I switched over I see an extra text at the result.txt.
With 25.6 I had results like:

[Fri Oct 10 20:25:04 2008]
21181*2^15854852+1 completed P-1, B1=130000, B2=2200000, Wd1: 9A15E8A8

And now with 25.7 I mostly get results like:

[Tue Oct 14 22:45:12 2008]
55459*2^16041334+1 completed P-1, B1=130000, B2=2200000, E=6, Wd1: 9F09E1E8

What does E=6 mean?

[opyrt]

I switched over from prime v25.6 to v25.7.
Since I switched over I see an extra text at the result.txt.
With 25.6 I had results like:

[Fri Oct 10 20:25:04 2008]
21181*2^15854852+1 completed P-1, B1=130000, B2=2200000, Wd1: 9A15E8A8

And now with 25.7 I mostly get results like:

[Tue Oct 14 22:45:12 2008]
55459*2^16041334+1 completed P-1, B1=130000, B2=2200000, E=6, Wd1: 9F09E1E8

What does E=6 mean?

I'm getting the same thing on my 32 bit client, but not on the 64 bit client.

Edit: I now see that this has been answered on mersenneforum: http://www.mersenneforum.org/showthread.php?t=10902

[Joh14vers6]

Today I found the factor:
P-1 found a factor in stage #2, B1=130000, B2=2200000.
21181*2^16496492+1 has a factor: 13825033371936547

But I will not get any credit for it because user 13796 (PrimeGrid) already found this factor.
I found that out here: http://www.seventeenorbust.com/sieve/results.txt.bz2
I searched for more tests with already found factors in my worktodo.txt and found another two already found factors by PrimeGrid. So I deleted them from the worktodo.txt.

How can I prevent PrimeGrid finding my factors first?