Report top-5000 primes here - Page 27

Puzzle-Peter · 2013-06-20, 14:10

Quote:

Originally Posted by MyDogBuster

90*748^116015+1 is prime

Well done! I wanna be next, there's been enough of a dry spell if you ask me...

Cruelty · 2013-07-01, 13:30

7019*10^881309-1 (881313 digits)

MyDogBuster · 2013-07-01, 14:26

Quote:

7019*10^881309-1 (881313 digits)

Nice one Borys - 93 on the big list

CRUS's largest to date

and R10 is now a 1ker

Cruelty · 2013-07-01, 14:28

Thanks, still one remaining for R10 and another one for S10

Puzzle-Peter · 2013-07-01, 14:32

Good one! Stamina pays off in the long run...

rogue · 2013-07-01, 16:45

Quote:

Originally Posted by Cruelty

7019*10^881309-1 (881313 digits)

Awesome!

henryzz · 2013-07-01, 18:30

The depressing part is that I calculate only 19.56% chance of a prime by n=2M for r10.

Cruelty · 2013-07-01, 19:06

What is really needed is a fixed-k non-base-2 GPU sieve similar to srsieve

Siemelink · 2013-07-01, 20:12

An excellent reward for three years of persistence. 8579*10^373260-1 seems to have been your previous R10 prime...

Willem.

rogue · 2013-07-01, 21:01

Quote:

Originally Posted by Cruelty

What is really needed is a fixed-k non-base-2 GPU sieve similar to srsieve

Unfortunately we are a way from doing that. BSGS needs too much memory so the GPU is not practical. Memory light methods are not very smooth.

henryzz · 2013-07-01, 22:28

Quote:

Originally Posted by rogue

Unfortunately we are a way from doing that. BSGS needs too much memory so the GPU is not practical. Memory light methods are not very smooth.

This has been discussed in the past.
http://www.mersenneforum.org/showthr...ht=bsgs&page=3
Is the memory usage dependent on p or the range of p?
Also you talk about needing 256 sets of 80MB data as there are 256 cores. Is there a way to utilize multiple cores on the same set of data?
Another option is to make it use only a few cores(as many as possible) and expect the user to also run a thread of mfaktc to saturate the gpu.

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2013-07-01, 13:30	#288
Cruelty May 2005 2³·7·29 Posts	7019*10^881309-1 (881313 digits)

2013-07-01, 14:28	#290
Cruelty May 2005 2³×7×29 Posts	Thanks, still one remaining for R10 and another one for S10

2013-07-01, 14:32	#291
Puzzle-Peter Jun 2009 683 Posts	Good one! Stamina pays off in the long run...

2013-07-01, 18:30	#293
henryzz Just call me Henry "David" Sep 2007 Cambridge (GMT/BST) 5,857 Posts	The depressing part is that I calculate only 19.56% chance of a prime by n=2M for r10.

2013-07-01, 19:06	#294
Cruelty May 2005 3130₈ Posts	What is really needed is a fixed-k non-base-2 GPU sieve similar to srsieve

2013-07-01, 20:12	#295
Siemelink Jan 2006 Hungary 2²·67 Posts	An excellent reward for three years of persistence. 8579*10^373260-1 seems to have been your previous R10 prime... Willem.