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-   -   Merry Christmas and a prime! (https://www.mersenneforum.org/showthread.php?t=22837)

ixfd64 2017-12-27 13:40

In case anyone wants to do some sleuthing, the server lists one "success" under the name Jon Pace.

Edit: my prediction is M77196191.

ET_ 2017-12-27 14:09

[QUOTE=ixfd64;474980]In case anyone wants to do some sleuthing, the server lists one "success" under the name Jon Pace.

Edit: my prediction is M77196191.[/QUOTE]

That looks a bit too close to be possible... :rolleyes:

Batalov 2017-12-27 15:45

Let the Game of Guessing begin!

ATH 2017-12-27 15:57

My encrypted guess is: 63198095

GP2 2017-12-27 16:57

[QUOTE=TheJudger;474978]Fastest GPU today should be Tesla [B]V[/B]100 - TITAN V has "crippled" memory bandwidth and thus should be slower because CUDAlucas is memory bandwidth bound on this type of hardware.

Oliver[/QUOTE]

This GPU is available on AWS cloud as the p3.2xlarge instance type.

Prime95 2017-12-27 18:52

[QUOTE=ixfd64;474980]In case anyone wants to do some sleuthing, the server lists one "success" under the name Jon Pace.[/QUOTE]

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.

Madpoo 2017-12-27 18:57

[QUOTE=GP2;474990]This GPU is available on AWS cloud as the p3.2xlarge instance type.[/QUOTE]

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.

Batalov 2017-12-27 19:05

[QUOTE=Madpoo;475002]Best estimate though was it would cost me around $200-300 to test it out on that. LOL No thanks.[/QUOTE]
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 [STRIKE]spent[/STRIKE] donated 2 x $20 for the two M49 verification runs with Mlucas (with different FFT sizes).

preda 2017-12-27 19:25

Does this new discovery (assuming confirmed), reduce by any amount the chance of finding another prime in the vicinity?

Madpoo 2017-12-27 19:51

[QUOTE=preda;475009]Does this new discovery (assuming confirmed), reduce by any amount the chance of finding another prime in the vicinity?[/QUOTE]

Impossible to say... I'm reminded of the (probably) 46th and 47th Mersenne primes that are within spitting distance of each other, for example.

Prime95 2017-12-27 20:43

[QUOTE=preda;475009]Does this new discovery (assuming confirmed), reduce by any amount the chance of finding another prime in the vicinity?[/QUOTE]

No, not that this is proven.


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