Forum: And now for something completely different
2021-04-05, 20:41
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Replies: 267
Views: 43,222
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Forum: And now for something completely different
2021-04-05, 20:39
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Replies: 245
Views: 40,193
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Forum: And now for something completely different
2021-03-06, 17:16
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Replies: 267
Views: 43,222
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Forum: Riesel Prime Search
2021-03-06, 09:13
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Replies: 1,963
Views: 202,072
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Forum: Riesel Prime Search
2021-02-02, 12:40
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Replies: 1,027
Views: 132,675
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Forum: Riesel Prime Search
2020-11-04, 06:56
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Replies: 1,963
Views: 202,072
195*2^4373994-1 is prime! (1316706 digits)
...
195*2^4373994-1 is prime! (1316706 digits)
https://primes.utm.edu/primes/page.php?id=131376
Non-essential fun facts:
1) k=195 is the highest Nash weight k in RSP k<300, with a weight of...
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Forum: Riesel Prime Search
2020-09-21, 05:55
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Replies: 1,027
Views: 132,675
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Forum: Riesel Prime Search
2020-07-02, 12:33
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Replies: 409
Views: 66,650
llrCUDA works, I have been running one for...
llrCUDA works, I have been running one for months. But it's slow, much slower than a CPU in the same class .
I am getting 1.1ms per iteration on n=3.8M on a 1080TI
While the same n is getting 0.271...
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Forum: Riesel Prime Search
2020-06-11, 14:11
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Replies: 1,027
Views: 132,675
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Forum: PrimeNet
2020-05-19, 06:17
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Replies: 4
Views: 2,476
I can appreciate strict primality over PRP of...
I can appreciate strict primality over PRP of course. But I would like to point out that the likelihood PRPs the size of this specific number being Fermat liars is in the neighborhood of 10-50000. So...
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Forum: Hardware
2020-04-30, 16:03
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Replies: 3
Views: 2,041
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Forum: Software
2020-04-22, 06:21
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Replies: 300
Views: 56,460
Printing Carriage Return instead of the Newline...
Printing Carriage Return instead of the Newline symbol does that to a line.
Also I wouldn't say "Probabilistic vs Deterministic" is the reason we use the LLR test vs the Fermat test. The LLR test is...
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Forum: Cloud Computing
2020-04-14, 14:07
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Replies: 1,142
Views: 98,180
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Forum: Cloud Computing
2020-04-13, 06:32
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Replies: 43
Views: 11,274
I am sure Google tries its best so that users...
I am sure Google tries its best so that users wouldn't see that. But I can see how instances could be unavailable for a short time in times of congestion. Other than that one brief time when it...
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Forum: Cloud Computing
2020-04-08, 14:55
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Replies: 43
Views: 11,274
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Forum: GPU to 72
2020-04-07, 15:27
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Replies: 208
Views: 33,226
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Forum: Cloud Computing
2020-04-07, 08:02
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Replies: 43
Views: 11,274
CPU instances (for LLR64) have been...
CPU instances (for LLR64) have been stable/predictable for the last couple of weeks. I use two accounts with 4 instances each. They both get about 12 hours of runtime a day. Both accounts expire and...
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Forum: Prime Wiki
2020-04-03, 21:37
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Replies: 199
Views: 46,242
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Forum: Prime Wiki
2020-04-03, 18:29
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Replies: 199
Views: 46,242
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Forum: Information & Answers
2020-03-21, 14:35
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Replies: 12
Views: 4,987
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Forum: Software
2020-03-20, 14:46
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Replies: 14
Views: 4,965
Hi, just to chip in about CPU issues. The...
Hi, just to chip in about CPU issues. The GenuineIntel doesn't matter, all CPU's are genuine. Nobody makes "counterfeit Intel CPUs", well not working ones at least. To know if it's an ES you can look...
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Forum: Programming
2020-03-18, 14:29
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Replies: 51
Views: 20,667
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Forum: Programming
2020-03-18, 13:41
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Replies: 51
Views: 20,667
Doing some back-of-the-napkin math here, which...
Doing some back-of-the-napkin math here, which might not be correct - I am not a mathematician, but a software engineer.
We have N=2^n-1. Let's assume n "tries" to get 1 as a result of the mod...
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Forum: Programming
2020-03-17, 13:23
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Replies: 51
Views: 20,667
Prime95, LLR64, and even my own implementation...
Prime95, LLR64, and even my own implementation use the gwnum library for the core multiplication/subtraction/modulus, not the builtin %, which works only on native ints. Before I wrote my final...
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Forum: Programming
2020-03-17, 12:28
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Replies: 51
Views: 20,667
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