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 2004-08-20, 14:51 #1 jocelynl   Sep 2002 2×131 Posts Low weight stats page. Since <300k is almost completed, I would like to set up a page on low weight candidates of the form k*2^n-1 . If you could just tell me what work you have done on these. It would be nice not to duplicate work. Joss Last fiddled with by jocelynl on 2004-08-21 at 12:16
 2004-08-23, 10:47 #2 Kosmaj     Nov 2003 2·1,811 Posts I haven't done any work on low-weight k's but I was thinknig to propose that we process one real but small 15k to 1M like k=15, 45, 75 or 105. After sieving such k's produce too many candidates for a single cruncher to process, but potentially they hide a good deal of primes so if we do it together there are good chances that many of us will find a large prime. With the latest LLR-P4 I think it can be done in a reasonable amount of time. What do you say?
 2004-08-23, 15:58 #3 jocelynl   Sep 2002 1000001102 Posts I guess Mark could set up a team for some low 15k like he has done with 210885 and 2995125705. With the new LLRP-4, k=15 seems a good choice. Robert has been working on it for some times. We should ask him for team work first. Joss
 2004-09-02, 10:44 #4 jocelynl   Sep 2002 10616 Posts This is our first top5000 prime on Low Weight Candidate 3817*2^218917-1 It's a start! Joss
 2004-11-16, 19:54 #5 Thomas11     Feb 2003 22×32×53 Posts I'm just announcing the find of two (big) primes of low weight k: 209826493*2^1140855-1 (ranking at position 50 of the Top-5000!) 209826493*2^1071303-1 (found a few months earlier) -- Thomas L10
 2004-11-16, 21:09 #6 Templus     Jun 2004 2·53 Posts Wow thomas!! Congratulations on your 2 big primes!!!! Good work!!!!
 2004-11-17, 17:53 #7 jocelynl   Sep 2002 2·131 Posts These should had some weight to our project! Great work Thomas ! Joss
 2004-12-12, 15:35 #8 Thomas11     Feb 2003 77416 Posts How about another big one? 80857169*2^1251076-1 is prime! -- Thomas L10
 2004-12-12, 19:51 #9 jocelynl   Sep 2002 2×131 Posts Wow! rank 37, whooo now we're talking. congratulation Joss
 2004-12-18, 16:15 #10 Kosmaj     Nov 2003 E2616 Posts Thomas, congrats any many huge primes! BTW, can I reserve one k, just to try? I'm not sure how to read the table at the status page but if available I'd like to take k=32537227. It has no available data so I assume it's available(?) Can one reserve k's with some associated date in the table and/or provided sieve file? Thanks and good luck! Last fiddled with by Kosmaj on 2004-12-18 at 16:34
 2004-12-18, 17:17 #11 jocelynl   Sep 2002 10616 Posts Hi Kosmaj, k=32537227 is all yours I don't have any sieve file for it It's not a very low weight at 2100 n's left at 20M but still a good choice. Joss

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