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 Showing results 1 to 25 of 1000 Search took 0.54 seconds. Search: Posts Made By: fivemack
 Forum: Factoring 2020-05-22, 07:46 Replies: 496 Views: 52,645 Posted By fivemack L4375B done This popped up on the Mersennus.net page and I managed to complete it in three real-time weeks on one machine (I'll admit it was an i9-7940X so quite a fast machine) - 2.5 days polynomial search, a...
 Forum: NFS@Home 2020-04-24, 20:48 Replies: 39 Views: 3,703 Posted By fivemack L4635A complete Fri Apr 24 13:58:34 2020 p62 factor: 54473084981910910373895572374171513288488971021552223758184061 Fri Apr 24 13:58:34 2020 p134 factor:...
 Forum: Factoring 2020-04-19, 13:45 Replies: 1 Views: 243 Posted By fivemack Dividing out by the counts of prime ideals (which... Dividing out by the counts of prime ideals (which are just length(polrootsmod(f,p)) ) gives something with much nicer statistical properties - the linear fit has an r^2 of 0.998 rather than 0.957,...
 Forum: Factoring 2020-04-15, 10:48 Replies: 1 Views: 243 Posted By fivemack Yields with 16e This is a 16e factorisation of a GNFS-200.0 number (and about a third complete) I am a little surprised that, with alim=rlim=400M, I'm seeing the yield increasing monotonically as Q goes down all...
 Forum: NFS@Home 2020-03-31, 14:24 Replies: 39 Views: 3,703 Posted By fivemack L4635A started ETA 23 April evening
 Forum: Aliquot Sequences 2020-03-26, 16:36 Replies: 3,293 Views: 238,373 Posted By fivemack Taking 661998 Taking 661998
 Forum: Aliquot Sequences 2020-03-26, 16:36 Replies: 3,293 Views: 238,373 Posted By fivemack Drop 642768 (2^2 * 269 * ECMed C141) Drop 642768 (2^2 * 269 * ECMed C141)
 Forum: Information & Answers 2020-03-22, 10:20 Replies: 3 Views: 546 Posted By fivemack Run memtest (a modern version, download from... Run memtest (a modern version, download from memtest86.com rather than using the version that appears in your boot-loader menu); those squashfs errors look like defective memory modules to me. The...
 Forum: Factoring 2020-03-21, 07:04 Replies: 496 Views: 52,645 Posted By fivemack Currently running L4235A C201, which is going to... Currently running L4235A C201, which is going to take quite a while; will do 145!-1 after that. With the plague now and a baby due in June I doubt my hardware resources will grow in the next 18...
 Forum: Factoring 2020-03-21, 00:04 Replies: 496 Views: 52,645 Posted By fivemack 167!-1 done Fri Mar 20 19:48:18 2020 p78 factor: 339681113011636637534097684131750881577621867753623483183030698483021419238073 Fri Mar 20 19:48:18 2020 p104 factor:...
 Forum: NFS@Home 2020-03-20, 09:49 Replies: 39 Views: 3,703 Posted By fivemack F1645 complete Thu Mar 19 22:12:36 2020 p75 factor: 124480030191217022570101563396234688664281201878322907744151618458267884541 Thu Mar 19 22:12:36 2020 p124 factor:...
 Forum: NFS@Home 2020-03-09, 18:25 Replies: 39 Views: 3,703 Posted By fivemack There will be a delay; the job crashed early... There will be a delay; the job crashed early morning 7 March and the machine is currently unresponsive over the network and moreover in a different city from me. (there will be more of a delay; I...
 Forum: NFS@Home 2020-03-09, 13:24 Replies: 39 Views: 3,703 Posted By fivemack L2965B complete Sat Mar 7 00:57:47 2020 p117 factor: 130793892095011010261570807276990949088253001123492162239158601294648700615532642298214759019715949581932350224038801 Sat Mar 7 00:57:47 2020 p126 factor:...
 Forum: Factoring 2020-03-06, 14:26 Replies: 3 Sticky: RSA-250 Views: 3,914 Posted By fivemack So it's still a factor three more runtime for ten... So it's still a factor three more runtime for ten more digits at the 240-digit level; interesting to know. Maybe slightly lower for the linear algebra. (800/100 X6130-core-years for RSA240;...
 Forum: Information & Answers 2020-03-01, 20:36 Replies: 15 Views: 1,433 Posted By fivemack I do wish that operating system manufacturers... I do wish that operating system manufacturers would provide a version that unleashes the full speculation potential of our hardware, for people actually wanting to do computation rather than checking...
 Forum: NFS@Home 2020-03-01, 09:52 Replies: 39 Views: 3,703 Posted By fivemack L2965B eta morning of March 7 L2965B eta morning of March 7
 Forum: Astronomy 2020-02-24, 18:55 Replies: 10 Views: 795 Posted By fivemack I hadn't heard of using asteroid occultations to... I hadn't heard of using asteroid occultations to measure stars - I guess there's much less stray light than the lunar-limb method, and you can do it for stars that don't get occulted by the Moon.
 Forum: Factoring 2020-02-20, 11:36 Replies: 42 Views: 3,246 Posted By fivemack So that's a significantly larger and heavier... So that's a significantly larger and heavier matrix than the RSA-768 factorisation from INRIA; what was the point of doing all that computation to demonstrate they were less effective at factoring a...
 Forum: NFS@Home 2020-02-17, 07:10 Replies: 39 Views: 3,703 Posted By fivemack ETA for F1645 is 11 March: 46.9M matrix ETA for F1645 is 11 March: 46.9M matrix
 Forum: NFS@Home 2020-02-13, 07:35 Replies: 39 Views: 3,703 Posted By fivemack F1459 done Wed Feb 12 23:55:48 2020 p77 factor: 27699165354693819016801075486232972683723699059340461464932398144896384968753 Wed Feb 12 23:55:48 2020 p123 factor:...
 Forum: Software 2020-02-09, 20:48 Replies: 46 Views: 4,378 Posted By fivemack I am a little confused by what's happening here: ... I am a little confused by what's happening here: Timing 20480K FFT, 12 cores, 2 workers. Average times: 50.92, 50.64 ms. Total throughput: 39.39 iter/sec. [Worker #1 Feb 4 17:37] Timing...
 Forum: Miscellaneous Math 2020-02-09, 20:21 Replies: 6 Views: 627 Posted By fivemack An analogous question: Prove there is no... An analogous question: Prove there is no integer for which n, 2n, 4n, ..., (2^20)n all have no 0 in their decimal expansion Find an integer for which n, 2n, 4n, ..., (2^19)n all have no 0 in...
 Forum: Miscellaneous Math 2020-02-09, 19:54 Replies: 6 Views: 627 Posted By fivemack An unreasonable operation Consider the operation where you double a number and then cross out all the zeroes in its base-10 representation eg 34 -> 68 -> 136 -> 272 -> 544 -> 188 -> 376 -> 752 -> 154 -> 38 -> 76 -> 152 ->...
 Forum: CADO-NFS 2020-01-27, 19:57 Replies: 479 Sticky: CADO NFS Views: 40,425 Posted By fivemack well that was silly I had thought I could use -admin X -incr 420 and -admin {X+210} -incr 420 on two machines to search a wide c5 range efficiently. But in fact polyselect adjusts admin to the next multiple of incr,...
 Forum: Aliquot Sequences 2020-01-12, 20:21 Replies: 263 Views: 12,085 Posted By fivemack I've done some more lines on 23^8 I've done some more lines on 23^8
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