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2020-11-19, 20:54   #23
jyb

Aug 2005
Seattle, WA

110101000112 Posts

Quote:
Originally Posted by swellman
Quote:
 Originally Posted by axn # 131^106+106^131, difficulty: 267.34 # 131^106+106^131, difficulty: 269.37 I don't get this part. IIUC, for getting the sextic, the number had to be multiplied by 131^2*106, whereas for the quintic, there is no such fiddling necessary. So the sextic difficulty should be 6 digits larger.
Output by Yafu. With SNFS it cranks out dozens of potential polynomials then downselects to the best three for test sieving. Perhaps B^2 can shed more light on the various steps of that Kabuki dance.
Indeed, I don't understand the values Yafu is printing. My calculations show the quintic with a difficulty of 265.32 and the sextic with a difficulty of 271.57, so there's axn's 6 digits right there.

 2020-11-23, 04:34 #24 jyb     Aug 2005 Seattle, WA 1,699 Posts QUEUED AS 8p3_834M SNFS-251.06 (quartic) C220 HCN (8+3,834M), ECM to t60. Code: n: 4106609588424447396996222513379693412003124266674309491729863520838604405098468326525117796586140070117851619915391156765666063208322467227650127948824324948835330331474513772746013914096270530047953563697353232926629461 skew: 1.22474 c4: 4 c3: 12 c2: 18 c1: 18 c0: 9 Y1: 834385168331080533771857328695283 Y0: -411376139330301510538742295639337626245683966408394965837152256 rlim: 225000000 alim: 225000000 lpbr: 32 lpba: 32 mfbr: 94 mfba: 62 rlambda: 3.6 alambda: 2.6 Trial sieving 2K blocks. Code:  Q Yield --- ----- 50M 2816 90M 3438 130M 3539 170M 3299 210M 3673 250M 3585 290M 3703 330M 3421 Recommend sieving special Q on rational side, 50M - 310M. Last fiddled with by swellman on 2020-11-23 at 11:17
 2021-01-21, 15:27 #25 fivemack (loop (#_fork))     Feb 2006 Cambridge, England 13·491 Posts I've put L3065B (SNFS quartic, no small factor known) onto the 16fs queue. Not quite sure how much ECM has been done on it; it won't get to the front of the queue any time soon so I'll run a few thousand curves at B1=260M on my GTX1080
 2021-01-29, 08:52 #26 fivemack (loop (#_fork))     Feb 2006 Cambridge, England 13×491 Posts The few thousand curves found a factor, I've deleted the job and started running curves on L2250 Last fiddled with by fivemack on 2021-01-29 at 10:17
 2021-02-04, 15:30 #27 fivemack (loop (#_fork))     Feb 2006 Cambridge, England 13·491 Posts 6400 curves at B1=260M found no factor for L2250; I've queued up the job while post-processing a further 3840 curves. It looks rather low yield even for an SNFS-250 quartic, but 300MQ ought to get there.

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