Thread: SNFS Performance View Single Post
 2022-01-07, 14:18 #3 nivek000   Dec 2021 1710 Posts I am running the factor command on the C214: Code: 9204214625221874710952946935076263878608726889174004840754589809679987461484965033357036848408384671559545992781188531318866340573729054722277805831939611797303471658749775441007571889786142040525120939985881393299 This leads to a C160 SNFS: Code: 01/07/22 02:23:41, nfs: commencing nfs on c160: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 01/07/22 02:23:41, nfs: input divides 43^131 - 42^131 01/07/22 02:23:41, nfs: using supplied cofactor: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 01/07/22 02:23:41, nfs: commencing snfs on c160: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 01/07/22 02:23:41, gen: best 3 polynomials: n: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 # 43^131-42^131, difficulty: 213.98, anorm: -8.04e+28, rnorm: 7.89e+48 # scaled difficulty: 217.98, suggest sieving rational side # size = 6.194e-15, alpha = 0.995, combined = 3.414e-12, rroots = 1 type: snfs size: 213 skew: 0.9953 c5: 43 c0: -42 Y1: -1601332619247764283850260201342556799238144 Y0: 2952431600795587633717359131697109546569049 n: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 # 43^131-42^131, difficulty: 218.86, anorm: -3.54e+35, rnorm: 2.01e+42 # scaled difficulty: 220.21, suggest sieving rational side # size = 6.444e-11, alpha = 0.798, combined = 2.431e-12, rroots = 2 type: snfs size: 218 skew: 1.0039 c6: 42 c0: -43 Y1: -514617308132852400700537649353457664 Y0: 863586854220408743801513785592407849 n: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 # 43^131-42^131, difficulty: 233.50, anorm: -3.01e+33, rnorm: 3.35e+50 # scaled difficulty: 236.91, suggest sieving rational side # size = 8.786e-17, alpha = -1.236, combined = 2.748e-13, rroots = 1 type: snfs size: 233 skew: 1.0190 c5: 3111696 c0: -3418801 Y1: -67255970008406099921710928456387385568002048 Y0: 126954558834210268249846442662975710502469107 01/07/22 02:23:46, test: fb generation took 3.9993 seconds 01/07/22 02:23:46, test: commencing test sieving of polynomial 0 on the rational side over range 27800000-27801000 skew: 1.1247 c5: 43 c0: -42 Y1: -1601332619247764283850260201342556799238144 Y0: 2952431600795587633717359131697109546569049 rlim: 27800000 alim: 27800000 mfbr: 58 mfba: 58 lpbr: 29 lpba: 29 rlambda: 2.60 alambda: 2.60 01/07/22 02:23:46, test: estimated total sieving time = 11574 days 1h 46m 39s (with 40 threads) 01/07/22 02:23:52, test: fb generation took 6.5770 seconds 01/07/22 02:23:52, test: commencing test sieving of polynomial 1 on the rational side over range 29200000-29201000 skew: 1.0742 c6: 42 c0: -43 Y1: -514617308132852400700537649353457664 Y0: 863586854220408743801513785592407849 rlim: 29200000 alim: 29200000 mfbr: 58 mfba: 58 lpbr: 29 lpba: 29 rlambda: 2.60 alambda: 2.60 01/07/22 02:23:53, test: estimated total sieving time = 11574 days 1h 46m 39s (with 40 threads) 01/07/22 02:23:59, test: fb generation took 6.2644 seconds 01/07/22 02:23:59, test: commencing test sieving of polynomial 2 on the rational side over range 43600000-43601000 skew: 1.1311 c5: 3111696 c0: -3418801 Y1: -67255970008406099921710928456387385568002048 Y0: 126954558834210268249846442662975710502469107 rlim: 43600000 alim: 43600000 mfbr: 60 mfba: 60 lpbr: 30 lpba: 30 rlambda: 2.60 alambda: 2.60 01/07/22 02:23:59, test: estimated total sieving time = 11574 days 1h 46m 39s (with 40 threads) 01/07/22 02:23:59, gen: selected polynomial: n: 1094978880991933841557716588685966958370702537417059147514661217327507272995782570163478397553503222964719677999983911694855297094453016882804532233693251575823 # 43^131-42^131, difficulty: 213.98, anorm: -8.04e+28, rnorm: 7.89e+48 # scaled difficulty: 217.98, suggest sieving rational side # size = 6.194e-15, alpha = 0.995, combined = 3.414e-12, rroots = 1 type: snfs size: 213 skew: 1.1247 c5: 43 c0: -42 Y1: -1601332619247764283850260201342556799238144 Y0: 2952431600795587633717359131697109546569049 01/07/22 02:23:59, nfs: commencing lattice sieving with 40 threads