mersenneforum.org Riesel Primes k*2^n-1, k<300 [Part II]
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2007-09-04, 05:48   #45
Cruelty

May 2005

2×809 Posts

Quote:
 Originally Posted by Kosmaj I'm afraid that for at least one of your remaining k's you will have to go into mega-bit exponents to find the next prime. But I know that's not a problem for you.
That's why I'm sieveing till n=2M

 2007-09-04, 07:45 #46 VBCurtis     "Curtis" Feb 2005 Riverside, CA 101278 Posts Cruelty- did you also sieve k=199 to 2M? If so, can you email it to me? Perhaps I can start a new form of team drive, testing 199 until I find a prime and then releasing it for the next person to reserve and continue. -Curtis
 2007-09-04, 08:14 #47 Cruelty     May 2005 2·809 Posts I haven't touched k=199 above n=600000. I am only sieving 141,151 and 269 till n=2M.
 2007-09-07, 02:43 #48 sjtjung     Mar 2006 Columbus, OH 7·11 Posts update 31 has reached 865k on the high part. P4 is currently working back on 207 (at 586k). Sempron is set to continue 31 from 865k and up. Celeron is now LLRing 31 on the lower range, filling up the gap (at 570k currently). EDIT: no new primes -Steven Last fiddled with by sjtjung on 2007-09-07 at 02:44
 2007-09-09, 16:11 #49 arminius     Sep 2006 Germany 2×59 Posts k=49 Update: Sieving at 6T to 2M LLR complete to 1M. Continuing. No new primes.
 2007-09-10, 18:00 #50 lsoule     Nov 2004 California 23×3×71 Posts k=39 is at n=1.135M k=223 is at n= 1.99M
 2007-09-10, 21:00 #51 kar_bon     Mar 2006 Germany 2·1,399 Posts status k=209 at 764k k=297 at 615k
 2007-09-10, 23:06 #52 VBCurtis     "Curtis" Feb 2005 Riverside, CA 418310 Posts monthly status report 11 still no work yet- will be a while before sieving is ready. 13 at 1.14M. 45 at 740k. 93 at 710k. 99 at 1.04M. 127 at 1.12M. 201 at 775k. no progress on 111 and 197. -Curtis
 2007-09-14, 11:20 #53 Cruelty     May 2005 110010100102 Posts k=141 done till n=620000. I am releasing this k. If someone wishes to continue this work I have a sieve file till n=2M and p~2T. I am continuing with k=151 and 269 until I find a prime for each of them
 2007-09-17, 18:20 #54 lsoule     Nov 2004 California 23·3·71 Posts k=223 complete up to n=2M. Releasing this K!
 2007-09-17, 18:34 #55 Flatlander I quite division it     "Chris" Feb 2005 England 31×67 Posts k=55 tested to 900,000. Continuing.

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