mersenneforum.org How far along are you in your 100M digit LL test?
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 2008-12-21, 06:48 #1 JuanTutors     "Juan Tutors" Mar 2004 23B16 Posts How far along are you in your 100M digit LL test? How far along are you in your 100M digit LL test? What is your expected finish date? I got caught with an exponent that hadn't gotten a P-1 test or factoring through 2^75 (which may actually be the norm), so I'm 0% of the way through. I'm probably looking at another month to six weeks before my LL test even starts. The only thing I have is an approximate length of time which will bring me to February 2014.
 2012-02-19, 13:56 #2 emily   Feb 2012 Athens, Greece 578 Posts What if there are some calculation errors during all this time? You'll have to restart the whole calculation, right?
2012-02-19, 14:02   #3
retina
Undefined

"The unspeakable one"
Jun 2006
My evil lair

11010000110002 Posts

Quote:
 Originally Posted by emily What if there are some calculation errors during all this time? You'll have to restart the whole calculation, right?
If staging files are kept at periodic intervals then it might be possible to avoid beginning from the start. But a much better solution is to only do computations that take a long time (> 1 month IMO) on a machine with ECC.

2012-02-19, 18:41   #4
Dubslow

"Bunslow the Bold"
Jun 2011
40<A<43 -89<O<-88

160658 Posts

Quote:
 Originally Posted by emily What if there are some calculation errors during all this time? You'll have to restart the whole calculation, right?
The only completed 100M digit test has errors, and it's not going to be double checked for a long time.

2012-02-19, 19:14   #5
Batalov

"Serge"
Mar 2008
Phi(4,2^7658614+1)/2

100111010001012 Posts

Quote:
 Originally Posted by emily What if there are some calculation errors during all this time? You'll have to restart the whole calculation, right?
Another good question would be - how would one know that there were no calculation errors during all this time? ("Because Prime95 didn't report any errors" is not the right answer!)

2012-02-21, 07:04   #6
jasong

"Jason Goatcher"
Mar 2005

350710 Posts

Quote:
 Originally Posted by Batalov Another good question would be - how would one know that there were no calculation errors during all this time? ("Because Prime95 didn't report any errors" is not the right answer!)
2 checksums that match would establish that there were no errors.

 2012-02-21, 07:36 #7 aketilander     "Åke Tilander" Apr 2011 Sandviken, Sweden 2×283 Posts The two 100M digit tests closest to completion Well there are only two active test which have passed the 50% line and they are: 332194529 presently at 73.10% after 564 days, started at 2010-08-06 by rjohnston 340705633 presently at 96.60% after 539 days, started at 2010-08-31 by Smok_bmv Oldest active 100M digit test is: 332209531 presently at 7.60% after 1199 days, started at 2008-11-09 by AARSOV24751

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