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 2008-09-07, 06:23 #34 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 53·73 Posts Maybe someone found a way to do a modular sqrt? Do the FFT, take a sqrt, do the inverse FFT. Don't reach for you revolvers, it's a joke.
2008-09-07, 06:42   #35
jinydu

Dec 2003
Hopefully Near M48

33368 Posts

Quote:
 Originally Posted by ixfd64 The second prime was first noticed by DasIon at 1:18 p.m. PDT, which equates to 20:18 UTC. Assuming that the earliest report of the prime was at 20:00 UTC, these are the potential candidates (excluding double checks):
Are you certain 20:00 UTC is the earliest mention? Does anyone have an archived report showing there was no mention at 19:00 UTC?

Last fiddled with by jinydu on 2008-09-07 at 06:42

 2008-09-07, 06:56 #36 T.Rex     Feb 2004 France 2·457 Posts I cannot believe it !!!!!!!!!!! C'est incroyable ! C'est un rêve ! That is incredible ! It is a dream ! Two years with no result. And now two new candidate primes !!! And, based on a deep knowledge of the properties of the digraph under x^2-2 modulo a Prime Mersenne number, I know how VERY LOW is the probability of a false-positive: So I'm sure we have 2 new Mersenne primes !! But, do we have found M45 and M46 ? ................ I'm not sure ............ but... hush. OK. I need another machine for verifying this new one... damned. Tony
 2008-09-07, 07:38 #37 Cybertronic     Jan 2007 DEUTSCHLAND ! 3×89 Posts That is VERY bad luck for the second finder, when both numbers have more than 10M digits. (Or everybody get 50.000 USD)
 2008-09-07, 07:52 #38 Prime95 P90 years forever!     Aug 2002 Yeehaw, FL 7,151 Posts I've rerun the last 10000 iterations. It checks out.
2008-09-07, 07:59   #39
T.Rex

Feb 2004
France

2×457 Posts
50k$for the discover of a >10M prime Quote:  Originally Posted by Cybertronic (Or everybody get 50.000 USD) No, I think. Only 50k$ are dedicated to the discover of a >10M prime number. See: Prizes.
Tony

2008-09-07, 08:04   #40
T.Rex

Feb 2004
France

16228 Posts

Quote:
 Originally Posted by Prime95 I've rerun the last 10000 iterations. It checks out.
Hey ! Isn't it about 3am in your town, George ?! Cannot sleep ?!!!

Congratulations for this marvelous result, George !!!
Thanks a lot !!!

Tony

Last fiddled with by T.Rex on 2008-09-07 at 08:05

 2008-09-07, 08:10 #41 akruppa     "Nancy" Aug 2002 Alexandria 2,467 Posts If the big irons are busy and Prime95 on a good quad core is about as fast as [GM]lucas on a non-Intel 16 core, couldn't we just run an LL test with Prime95, write residues every 1M iterations, and use the independent hardware/software run to verify from one residue to the next? Like they did with F24? Alex
2008-09-07, 08:15   #42
Prime95
P90 years forever!

Aug 2002
Yeehaw, FL

157578 Posts

Quote:
 Originally Posted by akruppa If the big irons are busy
Ernst's buddies apparently have lots of spare power. They have begun an independent verification.

2008-09-07, 08:36   #43
rgiltrap

Apr 2006
Down Under

89 Posts

Quote:
 Originally Posted by Prime95 Ernst's buddies apparently have lots of spare power. They have begun an independent verification.
Spare power may be an overstatement, but we have begged & borrowed to get access to some of the best kit... it's certainly not every day I email an Executive VP for a favour

From Sun's esteemed pony tailed leader to all the rank and file, there's a little geek in all Sun employees that simply can't decline a request to do something cool with some big grunty hardware

Last fiddled with by rgiltrap on 2008-09-07 at 08:45 Reason: Added blog link

 2008-09-07, 09:07 #44 jinydu     Dec 2003 Hopefully Near M48 2·3·293 Posts So what hardware is being used for this verification?

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