mersenneforum.org Riesel Primes k*2^n-1, k<300 [Part II]
 Register FAQ Search Today's Posts Mark Forums Read

 2008-01-02, 19:27 #133 sjtjung     Mar 2006 Columbus, OH 10011012 Posts Sorry for the confusion on the report that I made because I'm LLRing those k's in different machines. I'll make them much more simpler. 31 is tested up to 707k As for 207, I haven't got a chance to get a hold to the machine that is testing it. I'll report 207 ASAP, possibly on Jan 4th. -Steven
2008-01-02, 19:50   #134
gd_barnes

May 2007
Kansas; USA

52·11·37 Posts

Quote:
 Originally Posted by Cruelty Gary, 6-k drive sounds good to me, however right now I am thin on resources so I won't be able to participate

Thanks Cruelty. The 6-k drive can be off somewhat in the future anyway. I stated above that it would be about 2 months for me to get them all up to n=800K on 5-6 cores. I'll probably add 2 cores to that in between doing some testing on k=5, so I'm shooting for end of Feb.

Note for everyone's reference on these 6 k's; the average weight of them is well, actually BELOW average , so it's not a large effort. 2 are higher weight, 3 are lower weight, and 1 is medium weight. Below are the respective weights off of Karsten's new-and-improved k<300 page here. If you haven't seen the page, check it out. I think he updates it about every 2 weeks. Great work as usual Karsten!

k / weight:
9 / 1674
37 / 630
41 / 1174
43 / 633
61 / 2170
63 / 2807

Avg. weight 1515

Avg. weight of all k's is ~1600-1700

Gary

2008-01-03, 07:46   #135
gd_barnes

May 2007
Kansas; USA

52×11×37 Posts
Double-check on k=61 to n=500K complete

A double-check on k=61 for the range of n=400K-500K is complete. No problems were found and 61*2^499175-1 was confirmed prime.

Attached are the results.

Gary
Attached Files
 lresults000061-400K-500K-1.zip (88.4 KB, 73 views)

 2008-01-04, 06:46 #136 gd_barnes     May 2007 Kansas; USA 52×11×37 Posts Sieving done for k=37,41,43,61,63; sieving k=9 now I have completed the sieve for k=37,41,43,61,63 for n=585K-1M to P=10T. I decided to go ahead and sieve k=9 myself for n=850K-1.1M to P=10T before LLRing the 5 k's. 4 cores are on it and it will be done by Tuesday. At that time, I'll post that file as well as sieved files for k=37,41,43,61,63 for n=800K-1M in the sieved files thread. If no one is interested in LLRing k=9 up to n=1.1M, I'll LLR it after I've finished these 5 k's up to n=800K; probably late Feb. k=61 is now LLR'd to n=540K on 2 cores. No more primes yet. It will be hitting n=585K about a day before k=9 is done sieving, which will put all 5 k's at the same testing point. Those 2 cores plus the above 4 plus 1 more from another effort will make it 7 cores to throw at the 5 k's. And finally, I did a quick initial sieve on k=9 for n=1.1M-2M to P=50G. Since this is a more 'palatable' range to test for people, if anyone wants to continue the sieve, I'll gladly forward it your way. If not, I'll start sieving it deeper at the same time I'm LLRing the lower range of k=9. Gary
 2008-01-04, 18:47 #137 sjtjung     Mar 2006 Columbus, OH 7×11 Posts 207 update 207 is tested up to 662k -Steven
 2008-01-05, 05:28 #138 Kosmaj     Nov 2003 2·1,811 Posts Steven, thanks, I updated our stats page accordingly. The other news is that SlashDude checked k=23 to n=1.5M but found no new primes.
 2008-01-06, 20:13 #139 Cruelty     May 2005 2×809 Posts Status report on 12k k=109, 131, 141, 211, 221, 233, 245, 263, 269, 281, 283, 299, tested till n=640000 I am sieving all of the above for 640k
 2008-01-07, 03:27 #140 VBCurtis     "Curtis" Feb 2005 Riverside, CA 33·157 Posts k=111 complete to 1M, finally, and released. k=93 now testing on 5 machines, should be complete and released in a month or two. If anyone wishes to begin this k at 1.2M, they are welcome to. I have access to 8 new machines in my building at work, which will work on Cruelty's k's as he releases them to me. Please reserve 131,141,245,269,281 to me instead of cruelty, as I will be testing them the remainder of the way. -Curtis
 2008-01-07, 12:29 #141 Thomas11     Feb 2003 3×5×127 Posts k=75 tested up to n=850k, verified the prime 75*2^814857-1 found by Peter Benson. reserving k=113 from n=500k. -- Thomas
 2008-01-07, 13:23 #142 Kosmaj     Nov 2003 2×1,811 Posts Cruelty Last time you said you were releasing k=141 at 620k. Does it mean you kept on testing in up to 640k? The rest will be updated in the next version of the stats page (coming very soon).
2008-01-07, 18:57   #143
Cruelty

May 2005

2·809 Posts

Quote:
 Originally Posted by Kosmaj Cruelty Last time you said you were releasing k=141 at 620k. Does it mean you kept on testing in up to 640k? The rest will be updated in the next version of the stats page (coming very soon).
Looks like I forgot to mention... I have merged k=141 and 269 into my sieving effort (12k), and I have also decided to equalize the starting points for each of those k @ n=640k. I guess I mentioned it somewhere else (probably in some e-mail to Curtis) and forgot about the forum

 Similar Threads Thread Thread Starter Forum Replies Last Post KEP Conjectures 'R Us 1040 2020-07-13 07:31 lukerichards Number Theory Discussion Group 7 2018-01-20 16:47 Primeinator Information & Answers 12 2009-07-19 23:30 robert44444uk Sierpinski/Riesel Base 5 358 2008-12-08 16:28 SlashDude 15k Search 3 2004-06-14 16:07

All times are UTC. The time now is 05:41.

Sun Aug 9 05:41:37 UTC 2020 up 23 days, 1:28, 1 user, load averages: 1.71, 1.95, 1.79

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.