Taking
3321934129,
3321934163,
3321934193,
3321934199,

to 78 bit

Tacking M3321930401 from 79 to 80

Taking
M 3321934241
from 76 bits as far as it will go with a GEForce GTX440 on mfaktc 0.16p1

I look forward to hearing how far that is in a few thousand years!

[QUOTE=lavalamp;260139]I look forward to hearing how far that is in a few thousand years![/QUOTE]

Well, I guess he won't get farther than 92 bits running mfaktc... :smile:

I set the first stop at 77 bits.

Luigi

if one need 2 day to run an expo from 81 to 82, 91 to 92 would take 2^10 more...
so 2048 days...5 year and a half? so in total almost 11 years? ( with a speed of 105M/s)
baring hardware/code/algorithm change

[QUOTE=firejuggler;260163]if one need 2 day to run an expo from 81 to 82, 91 to 92 would take 2^10 more...
so 2048 days...5 year and a half? so in total almost 11 years? ( with a speed of 105M/s)
baring hardware/code/algorithm change[/QUOTE]

Benchmark this morning: 77 bits probably took 3 hours, on the GTX440, (there was a 30 hour proof test to complete, involving finding a random handy known factor) so 78 will take 6, 79 will take 12, 80 will take 24, and 82 will take four days, assuming no factor is found. I'm also doing some primenet work, so expect it to take longer as OBD doesn't get 100% of the GPU. After that, it's probably better to start knocking off something else...we'll call that "as far as it will go".

P.S. Hardware changes in a month or two...better GPU and Sandy Bridge CPU to support it.

forgot to say, that speed is with a core duo 8800, with a GTX 460.

Didn't find a factor at 77, going for 78 tomorrow...you find me 11 year old computing hardware still in service, and I'll show you a candidate antique, not to mention an energy hog with a bad case of molasses for compute-intensive work such as this...
wonder if we could run P-1 on some of these exponents?

Be a couple of days before this gets started, on account of "as far as it will go" and alternating with
Factor=XYZZY,58xxxyyy,69,73
However:
Factor=0,3321934243,76,80
Factor=0,3321934247,76,80
Factor=0,3321934307,76,80
Factor=0,3321934537,76,80
Factor=0,3321934607,76,80
Factor=0,3321934697,76,80

taking
3321934003
3321931967

from 79 to 81