mersenneforum.org > News Merry Christmas and a prime! (M50 related)
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 2017-12-27, 13:40 #23 ixfd64 Bemusing Prompter     "Danny" Dec 2002 California 2·3·397 Posts In case anyone wants to do some sleuthing, the server lists one "success" under the name Jon Pace. Edit: my prediction is M77196191. Last fiddled with by ixfd64 on 2017-12-27 at 13:51
2017-12-27, 14:09   #24
ET_
Banned

"Luigi"
Aug 2002
Team Italia

2×29×83 Posts

Quote:
 Originally Posted by ixfd64 In case anyone wants to do some sleuthing, the server lists one "success" under the name Jon Pace. Edit: my prediction is M77196191.
That looks a bit too close to be possible...

 2017-12-27, 15:45 #25 Batalov     "Serge" Mar 2008 Phi(4,2^7658614+1)/2 100100110111002 Posts Let the Game of Guessing begin!
 2017-12-27, 15:57 #26 ATH Einyen     Dec 2003 Denmark 1100001111112 Posts My encrypted guess is: 63198095
2017-12-27, 16:57   #27
GP2

Sep 2003

50368 Posts

Quote:
 Originally Posted by TheJudger Fastest GPU today should be Tesla V100 - TITAN V has "crippled" memory bandwidth and thus should be slower because CUDAlucas is memory bandwidth bound on this type of hardware. Oliver
This GPU is available on AWS cloud as the p3.2xlarge instance type.

2017-12-27, 18:52   #28
Prime95
P90 years forever!

Aug 2002
Yeehaw, FL

22×1,873 Posts

Quote:
 Originally Posted by ixfd64 In case anyone wants to do some sleuthing, the server lists one "success" under the name Jon Pace.
This loophole is now closed for future discoveries. I also erased Xolotl's 6 false successes.

In the future, I'll have to manually update the SQL table after prime verification is complete.

2017-12-27, 18:57   #29
Serpentine Vermin Jar

Jul 2014

37×89 Posts

Quote:
 Originally Posted by GP2 This GPU is available on AWS cloud as the p3.2xlarge instance type.
Just for giggles I looked up what it would cost me to run this on the Azure instance with 64 CPU cores (although I don't really know if those are physical or include HT cores, and how many sockets it's spread across). Best estimate though was it would cost me around $200-300 to test it out on that. LOL No thanks. I haven't looked at the Azure GPU instances to see how they're priced but I'd guess it'd be somewhat similar to run a beefy system for a day or two. 2017-12-27, 19:05 #30 Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 943610 Posts Quote:  Originally Posted by Madpoo Best estimate though was it would cost me around$200-300 to test it out on that. LOL No thanks.
Sheesh, that's steep. If one divined that this time this is a 'real one', then perhaps it would have been worth it. But not for ~10 false discoveries per year.

Last time I only spent donated 2 x \$20 for the two M49 verification runs with Mlucas (with different FFT sizes).

 2017-12-27, 19:25 #31 preda     "Mihai Preda" Apr 2015 136010 Posts Does this new discovery (assuming confirmed), reduce by any amount the chance of finding another prime in the vicinity?
2017-12-27, 19:51   #32
Serpentine Vermin Jar

Jul 2014

37·89 Posts

Quote:
 Originally Posted by preda Does this new discovery (assuming confirmed), reduce by any amount the chance of finding another prime in the vicinity?
Impossible to say... I'm reminded of the (probably) 46th and 47th Mersenne primes that are within spitting distance of each other, for example.

2017-12-27, 20:43   #33
Prime95
P90 years forever!

Aug 2002
Yeehaw, FL

22×1,873 Posts

Quote:
 Originally Posted by preda Does this new discovery (assuming confirmed), reduce by any amount the chance of finding another prime in the vicinity?
No, not that this is proven.

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