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 Showing results 1 to 25 of 1000 Search took 0.31 seconds. Search: Posts Made By: VBCurtis
 Forum: Miscellaneous Math 2021-09-19, 18:05 Replies: 9 Views: 253 Posted By VBCurtis How is it that you think you are smart enough to... How is it that you think you are smart enough to come up with a formula that turns out primes very often, but aren't smart enough to actually check if the (majority of) outputs are prime?
 Forum: Cunningham Tables 2021-09-19, 16:01 Replies: 72 Views: 30,287 Posted By VBCurtis Plutie's poly makes the job more than 1 digit... Plutie's poly makes the job more than 1 digit easier than the previous best. Bravo!
 Forum: Riesel Prime Search 2021-09-18, 04:27 Replies: 671 Views: 81,452 Posted By VBCurtis Seeing as how there have been no reservations in... Seeing as how there have been no reservations in four years, I think you can have at it. If you don't mind a little patience, we can ask if anyone wishes to do 6-6.1M before you start- perhaps...
 Forum: Msieve 2021-09-17, 19:44 Replies: 52 Sticky: Msieve GPU LA Views: 2,555 Posted By VBCurtis I'm gonna hand-wave here, since only a few people... I'm gonna hand-wave here, since only a few people have bothered taking data: When a relation set is right at the cusp of building a matrix, a few more hours sieving will save more than a few hours...
 Forum: Msieve 2021-09-17, 16:52 Replies: 52 Sticky: Msieve GPU LA Views: 2,555 Posted By VBCurtis In principle, yes. There's an electricity... In principle, yes. There's an electricity savings to be had by over-sieving less and accepting larger matrices, especially on the e-small queue where matrices are nearly all under 15M. However, one...
 Forum: Riesel Prime Search 2021-09-17, 05:00 Replies: 671 Views: 81,452 Posted By VBCurtis 5250-5300 complete, no primes. Results file... 5250-5300 complete, no primes. Results file attached; I'll leave it here for a couple weeks in case anyone wants it, and then I'll delete to save space on the forum. Should I change the...
 Forum: NFS@Home 2021-09-17, 02:15 Replies: 168 Views: 13,344 Posted By VBCurtis 13_2_889m1 has been factored: p68 factor:... 13_2_889m1 has been factored: p68 factor: 16198615149065734454793567815564974310130633967067455652347061521813 p144 factor:...
 Forum: NFS@Home 2021-09-15, 22:04 Replies: 184 Views: 20,204 Posted By VBCurtis QUEUED AS 13_2_911m1 13*2^911-1 is ready... QUEUED AS 13_2_911m1 13*2^911-1 is ready for SNFS, after 2T55 of ECM: n:...
 Forum: Riesel Prime Search 2021-09-14, 16:27 Replies: 671 Views: 81,452 Posted By VBCurtis Still just under 2k left. Still just under 2k left.
 Forum: Cunningham Tables 2021-09-12, 22:05 Replies: 72 Views: 30,287 Posted By VBCurtis Judging by the records for 200-201-202, a 3.0... Judging by the records for 200-201-202, a 3.0 should be possible. Like Kruoli, I'll hope for some lucky spin!
 Forum: NFS@Home 2021-09-09, 21:06 Replies: 33 Views: 3,660 Posted By VBCurtis I'd guess 875-900M relations to get a nice... I'd guess 875-900M relations to get a nice matrix; perhaps 50-330M and try filtering before deciding how many more Q? Yield of almost-3.0 sounds quite nice!
 Forum: Msieve 2021-09-09, 21:00 Replies: 52 Sticky: Msieve GPU LA Views: 2,555 Posted By VBCurtis It's a 32/33 hybrid, with a healthy amount of... It's a 32/33 hybrid, with a healthy amount of oversieving (I wanted a matrix below 30M dimensions, success!). I'm impressed that fits on your card, and 50hr is pretty amazing- I just started the...
 Forum: CADO-NFS 2021-09-07, 14:22 Replies: 63 Views: 11,924 Posted By VBCurtis More poly select doesn't interfere with anything... More poly select doesn't interfere with anything else- perhaps 2x more poly select saves you 5% of sieve time; that's around half a digit of difficulty. I have poly select calibrated to take about 5%...
 Forum: Aliquot Sequences 2021-09-05, 21:34 Replies: 524 Views: 63,333 Posted By VBCurtis We would need quite a lot of extra sieving to get... We would need quite a lot of extra sieving to get a matrix under 32GB in memory footprint; if you have 64, you're going to be fine (possibly with CADO, definitely with msieve). Barring any new...
 Forum: Aliquot Sequences 2021-09-04, 04:52 Replies: 524 Views: 63,333 Posted By VBCurtis This is good enough to sieve with. Between... This is good enough to sieve with. Between this and the Cunningham 3,748+ C204, one should go to f-small and the other should be a team sieve. Which should be which? My vote is to team-sieve...
 Forum: NFS@Home 2021-09-04, 01:16 Replies: 1,849 Sticky: BOINC NFS sieving - NFS@Home Views: 155,690 Posted By VBCurtis Well, I hope nobody tries to test-sieve with the... Well, I hope nobody tries to test-sieve with the params provided with the poly! lim's above 2^30, but 32bit large primes? GNFS-208 is not too hard for f-small; lim's of 225M are a bit restrictive...
 Forum: NFS@Home 2021-09-02, 22:24 Replies: 184 Views: 20,204 Posted By VBCurtis QUEUED AS 13_2_909m1 13*2^909-1 is ready for... QUEUED AS 13_2_909m1 13*2^909-1 is ready for SNFS on 15e: n:...
 Forum: CADO-NFS 2021-09-02, 21:28 Replies: 63 Views: 11,924 Posted By VBCurtis I leave all CADO processes the default... I leave all CADO processes the default two-threaded unless I run low on memory. But number of threads per process is separate from number of total threads used- CADO defaults to the total number of...
 Forum: Aliquot Sequences 2021-09-02, 15:51 Replies: 524 Views: 63,333 Posted By VBCurtis I use 0.05 for C140-C160 to reduce matrix time... I use 0.05 for C140-C160 to reduce matrix time when running all jobs on a single machine; I think EdH (who sieves on a "farm" of a dozen or more smaller machines) uses 0.08 or 0.10. The number is a...
 Forum: CADO-NFS 2021-09-02, 15:33 Replies: 63 Views: 11,924 Posted By VBCurtis Each polyselect process runs two-threaded, with... Each polyselect process runs two-threaded, with each thread working independently. Using adrange of 8 * incr means each thread gets four leading coefficients to search. It is unavoidable that one set...
 Forum: Prime Gap Searches 2021-09-02, 04:40 Replies: 45 Views: 8,415 Posted By VBCurtis Naming something after yourself is the most... Naming something after yourself is the most reliable way I know of to ensure nobody else ever uses your name to describe it.
 Forum: Factoring 2021-09-01, 04:46 Replies: 10 Views: 246 Posted By VBCurtis Do you have evidence that your compiled GGNFS... Do you have evidence that your compiled GGNFS binaries work? That is, do they function when called by factmsieve.py or yafu? If not, acquire working binaries or run one of those scripts to...
 Forum: Aliquot Sequences 2021-09-01, 02:45 Replies: 3,108 Views: 248,137 Posted By VBCurtis I appreciate the detail in the writeup- for e.g.... I appreciate the detail in the writeup- for e.g. Bur who sees a future in test-sieving, that post is a nice place to start. Here's the conclusion for Ryan: tasks.lim0 = 500000000 tasks.lim1 =...
 Forum: Aliquot Sequences 2021-08-31, 03:33 Replies: 3,108 Views: 248,137 Posted By VBCurtis Not just yet- we have to pick sieve parameters... Not just yet- we have to pick sieve parameters first! I used lpb0=34 and lpb1=35 for the GNFS-207 team sieve two years ago, and both LP bounds were higher than they needed to be. I believe those...
 Forum: Software 2021-08-29, 00:14 Replies: 435 Sticky: Prime95 v30.4/30.5/30.6 Views: 45,805 Posted By VBCurtis Why are you trying to make P95 do what LLR is... Why are you trying to make P95 do what LLR is designed for?
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