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-   -   Report Results Here (https://www.mersenneforum.org/showthread.php?t=3210)

Christenson 2011-06-21 01:40

[QUOTE=Uncwilly;264263]While updating that...
3321933397 shows up as active, but it has been factored @ 75. I check the last 3 pages on the check out and results threads and found no mention of it.[/QUOTE]

Have a closer look at:
[url]http://mersenneforum.org/showpost.php?p=264111&postcount=632[/url]

where 3321933397 is the first exponent listed, with a brief explanation. Indeed, this exponent has 3 factors below 75 bits. I'm going to run my newly operational GT480 card over the same ground, once, as a proof test. It should have found the smallest factor; the second one will be probably be found over next weekend (telling it to TF beyond found factors is a manual operation and I don't visit that machine daily), and it may also find the third, then I'll tell it to go on to 81 bits manually just for fun)

You can track my proof testing or not on the web page; the traffic simply isn't heavy enough to create an accidental collision.

lavalamp 2011-06-21 03:03

[QUOTE=Christenson;264267]telling it to TF beyond found factors is a manual operation and I don't visit that machine daily[/QUOTE]Not if you edit the mfaktc.ini file and make this change:[code]StopAfterFactor=[color=red]0[/color][/code]

Uncwilly 2011-06-21 03:05

[QUOTE=Uncwilly;264263]While updating that...[/QUOTE]<:redface:>Never mind, that was one page further back. </:redface:>

Christenson 2011-06-21 23:45

[QUOTE=lavalamp;264269]Not if you edit the mfaktc.ini file and make this change:[code]StopAfterFactor=[color=red]0[/color][/code][/QUOTE]
True, but there are no plans to make that depend on which exponent is being factored...I was thinking about the extra work that might happen. 2 more days before I hit that machine again, and it wasn't exactly top priority since it is highly probably everything is OK.

Christenson 2011-06-23 00:36

Bzzt!!! Wrong answer...storm turned off my GT480 for that!

Anyway, the GT480 did some work first:

no factor for M3321933551 from 2^78 to 2^79 [mfaktc 0.17-Win barrett79_mul32]
no factor for M3321933551 from 2^79 to 2^80 [mfaktc 0.17-Win barrett92_mul32]
no factor for M3321933551 from 2^80 to 2^81 [mfaktc 0.17-Win barrett92_mul32]

M3321933397 has a factor: 558084810697
M3321933397 has a factor: 16104733108657
M3321933397 has a factor: 974759534169131831
found 3 factor(s) for M3321933397 from 2^30 to 2^72 [mfaktc 0.17-Win 75bit_mul32]
(Not that these factors are news, but they do validate the card. I am going to continue to 81 bits)

no factor for M3321933541 from 2^78 to 2^79 [mfaktc 0.17-Win barrett79_mul32]
no factor for M3321933541 from 2^79 to 2^80 [mfaktc 0.17-Win barrett92_mul32]
(continuing to 81 bits)

monst 2011-06-24 11:41

no factor for M3321928697 from 2^79 to 2^80 [mfaktc 0.17-Win barrett92_mul32]
no factor for M3321928697 from 2^80 to 2^81 [mfaktc 0.17-Win barrett92_mul32]
no factor for M3321928697 from 2^81 to 2^82 [mfaktc 0.17-Win barrett92_mul32]


-- Rich

Rodrigo 2011-06-24 20:45

M3321936377 no factor from 60.000 bits to 71.000 bits.

Rodrigo

Christenson 2011-06-24 23:01

no factor for M3321934129 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32]
no factor for M3321934129 from 2^79 to 2^80 [mfaktc 0.17 barrett92_mul32]
Eric

lavalamp 2011-06-25 18:38

No factors for the following to 83 bits:
3321928171
3321928241
3321928307
3321928319

ET_ 2011-06-26 08:18

no factor for M3321933113 from 2^78 to 2^79 [mfaktc 0.17 barrett79_mul32]
no factor for M3321933113 from 2^79 to 2^80 [mfaktc 0.17 barrett92_mul32]
no factor for M3321933113 from 2^80 to 2^81 [mfaktc 0.17 barrett92_mul32]

Luigi

monst 2011-06-26 12:31

no factor for M3321928699 from 2^79 to 2^80 [mfaktc 0.17-Win barrett92_mul32]
no factor for M3321928699 from 2^80 to 2^81 [mfaktc 0.17-Win barrett92_mul32]


-- Rich


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