Register FAQ Search Today's Posts Mark Forums Read

2023-01-29, 17:32   #2366
swellman

Jun 2012

3×1,327 Posts

Quote:
 Originally Posted by VBCurtis Thanks, Sean! I'm really happy to see that yield is up on the 'spun' poly; I had doubts that spin of 190+ digit jobs was doing much other than removing CADO's optimization for an actual sieve area in favor of optimizing for Murphy's sieve area. This is a nice bit of evidence that spin works. :)
It is nice, though the new Q range is only ~1% smaller after spin. Every little bit helps though.

I did not post the timing data, as that machine was 80% tasked with other work in the background but finished it (unnoticed by me) in the middle of test sieving, making the timing data almost worthless. But we’re likely dealing with very slight differences in speed between the unspun and spun polynomials, and that possibly lost in the noise anyway.

Last fiddled with by swellman on 2023-01-29 at 17:33

 2023-05-13, 11:02 #2367 swellman     Jun 2012 F8D16 Posts Looking for a polynomial for the Lucas number L1988, a GNFS 188 composite: Code: n: 30621103012515081353750807219422658706831098484581463519835986792690700483098305033782194085302987276443501924986880592636881178436631787193570743153622164247274539051101271632415418137169 skew: 152920291.960 c0: 33770460483394841783859850729041379766493112359 c1: 2105278616090789260637010890121863701305 c2: 14885696995170332686136290940443 c3: -264905171361148262665561 c4: -341146513051002 c5: 1455336 Y0: -1839126116432793058726868199199026896 Y1: 68304675917372983 # lognorm 60.54, E 52.11, alpha -8.43 (proj -2.12), 5 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=2.697e-14 Best poly cownoise values: 178913008.93141 2.70469118e-14 as first found by me using msieve-GPU and then spun up by @EdH. It’s not a bad polynomial, msieve expects 2.69e-14 to > 3.1e-14 but it’s far below the record escore for a c189 of 2.857e-14. Any assistance appreciated. I am continuing my search with msieve-GPU up to c5=5M. No CADO based search has been attempted to the best of my knowledge.
 2023-05-17, 11:29 #2368 Gimarel   Apr 2010 2·131 Posts Finally had some time: Code: # norm 3.279641e-18 alpha -7.583082 e 3.260e-14 rroots 5 skew: 36022812.93 c0: 39570186980562070039514832528084761841020958 c1: 10554305803462188772625823661305925047 c2: -1315473575206741979161782619478 c3: -12884569821197576225783 c4: 1007078470396344 c5: 5765760 Y0: -1842658399546343513928002223756875242 Y1: 2551224760188697247737
2023-05-17, 12:17   #2369
swellman

Jun 2012

3·1,327 Posts

Quote:
 Originally Posted by Gimarel Finally had some time: Code: # norm 3.279641e-18 alpha -7.583082 e 3.260e-14 rroots 5 skew: 36022812.93 c0: 39570186980562070039514832528084761841020958 c1: 10554305803462188772625823661305925047 c2: -1315473575206741979161782619478 c3: -12884569821197576225783 c4: 1007078470396344 c5: 5765760 Y0: -1842658399546343513928002223756875242 Y1: 2551224760188697247737
Nice one. Many thanks.

 2023-05-24, 20:20 #2370 charybdis     Apr 2020 22×3×5×17 Posts c197 One from the 16e-small "virtual queue". 6,545+ c197 Smaller-but-Needed has finished ECM with Yoyo and now needs a polynomial: Code: 39191073799961411696044424466410018846557222545807791055784834508101626096490967293719171041952431051961735670859734824253828377186668135820546773233730413838142488501266199783260574819034216468391
 2023-05-25, 16:06 #2371 swellman     Jun 2012 76158 Posts I’m searching with CADO on my i7, starting at 1M, 210/840 and nq=5^7.
 2023-05-26, 21:53 #2372 EdH     "Ed Hall" Dec 2009 Adirondack Mtns 22·7·197 Posts It's below Msieve's expectation, but here's a CADO-NFS start: Code: n: 39191073799961411696044424466410018846557222545807791055784834508101626096490967293719171041952431051961735670859734824253828377186668135820546773233730413838142488501266199783260574819034216468391 Y0: -100545081916953810581480319784462430254 Y1: 64674559417589227915289 c0: 182933835154476198261273211226584088994919495584 c1: 6090139632998328889429625709342608131247 c2: -74727424575775775667269334446662 c3: -3542494818350480555690989 c4: 6772971822239616 c5: 53396280 skew: 87099993.953 # lognorm 62.84, E 53.99, alpha -8.85 (proj -2.31), 3 real roots # MurphyE(Bf=1.000e+07,Bg=5.000e+06,area=1.000e+16)=7.402e-15 Best poly cownoise values: 117356096.48735 7.44726176e-15 My Msieve script can't even get to a 4-handle. . . Much more work needed there.
 2023-05-27, 10:18 #2373 Gimarel   Apr 2010 2·131 Posts I can't do more search because it's getting to warm. Code: # norm 4.105896e-19 alpha -7.332980 e 8.836e-15 rroots 5 skew: 53308837.32 c0: 235114798492256124230662488509932926733683216 c1: 25131676607531224436383936962795184855 c2: -16293240959439666145345900786262 c3: 335182476531489028611187 c4: 5571508404306108 c5: 4324320 Y0: -112631499031811918074622308409721551282 Y1: 2623134752083198764781
2023-05-27, 11:22   #2374
charybdis

Apr 2020

22·3·5·17 Posts

Quote:
 Originally Posted by Gimarel I can't do more search because it's getting to warm. ...
A new record score for c197, thank you!

 2023-05-27, 11:46 #2375 swellman     Jun 2012 3·1,327 Posts Overnight my CADO search found a 5-handle, too low to dwell on. I’m done with this search. I’ll update the record table with Gimarel’s result.

 Similar Threads Thread Thread Starter Forum Replies Last Post ixfd64 mersennewiki 169 2018-09-21 05:43 carpetpool Miscellaneous Math 14 2017-02-18 19:46 cheesehead Forum Feedback 6 2009-07-28 13:02 R.D. Silverman NFSNET Discussion 13 2005-09-16 20:07 TauCeti NFSNET Discussion 0 2003-12-11 22:12

All times are UTC. The time now is 13:33.

Sun May 28 13:33:23 UTC 2023 up 283 days, 11:01, 0 users, load averages: 1.12, 1.10, 1.18