[QUOTE=Uncwilly;231994]Factor4p finds it, on my Core2Duo laptop under vista. Will try other versions later.[/QUOTE][QUOTE=Uncwilly;232010]It is SSE2 enabled. I plan on running Factor3 and 4 on this to check for program problems.[/QUOTE]I ran the SSE2 version of Factor3, it found the factor.

I am the problem, not my PC
 

I discovered the source of the error for 3321934709 -- me.

The power went out overnight. This got me to look for the outcome in the RESULTS.TXT file instead of the final Factor4 line in the DOS window... and there it was, not only for the 68-to-69 run, but also the original result. Moreover, it found [B]two[/B] factors and not just one.

Below are the contents of my RESULTS.TXT file:

[QUOTE]M3321928097 no factor from 58.000 bits to 59.000 bits.
M3321928097 no factor from 59.000 bits to 60.000 bits.
M3321934307 no factor from 62.000 bits to 71.000 bits.
M3321934537 no factor from 62.000 bits to 71.000 bits.
M3321934207 no factor from 62.000 bits to 71.000 bits.
M3321934709 has a factor: 378121774679999658041
M3321934709 has a factor: 1839558484365372097673
M3321934709 has a factor: 378121774679999658041
[/QUOTE]
(Ignore the top two lines; IIRC those are from when I was learning how to use the software.)

Obviously I need to be more careful in my reporting.

This is mortifying, and I'm sorry to have caused such inconvenience.

It's a good thing Luigi is on vacation -- he didn't end up adding to the time that we have all wasted because of this mistake.

Rodrigo

Nice to know it is not the software, or the machine.
Knowing that it is you is not fun.

You win some, you lose some.

3321934951 from 2^75 to 2^76 : no factor found

M3321934831 has no factor in [2^71, 2^72-1].

M3321934951 from 76 to 77 has no factor. next time perhaps !!!

Originally Posted by ET_ about M3321934379 from 69 bits to 71 bits.
I tested it on my Windows 7 64 bit and gave me no error. Would you mind sending your resume and results logfiles to me, so that I will be able to check what may be wrong?

Answered by Patrick:
i started another compute but at the end, i'll send you this.


Just as a reminder... :smile:

Luigi

3321930401 has no factor from 76 to 77

M3321934801 has no factor in [2^71 to 2^73-1]

At last!
 

M3321934607 no factor from 70.000 bits to 73.000 bits.

Now, on to more manageable bit levels for this PC...

Rodrigo

[QUOTE=Rodrigo;236976]Now, on to more manageable bit levels for this PC...

Rodrigo[/QUOTE]Does that mean 3321934757 to 71 bits?

You also still have 3321934207 and 3321934307 [url=http://www.mersenneforum.org/showpost.php?p=231769&postcount=507]reserved from 71 to 73 bits[/url].