Thread: YAFU 2.0
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Old 2021-09-14, 01:05   #228
James Heinrich
 
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"James Heinrich"
May 2004
ex-Northern Ontario

2·5·353 Posts
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I wouldn't have noticed this except for some error checking in my automated parsing of factor.log
Code:
09/13/21 08:12:06, ****************************
09/13/21 08:12:06, Starting factorization of 11745986472276496655662247734956521108703066873589956247227553585499089637967910706104797828678082669016193648910144450016469882935490998359642649527365479
09/13/21 08:12:06, using pretesting plan: deep
09/13/21 08:12:06, using specified qs/gnfs crossover of 100 digits
09/13/21 08:12:06, using specified qs/snfs crossover of 75 digits
09/13/21 08:12:06, ****************************
09/13/21 08:12:06, rho: x^2 + 3, starting 1000 iterations on C155
09/13/21 08:12:06, prp5 = 91291
09/13/21 08:12:06, rho: x^2 + 3, starting 1000 iterations on C150
09/13/21 08:12:06, prp7 = 7805879
09/13/21 08:12:06, rho: x^2 + 3, starting 1000 iterations on C143
09/13/21 08:12:06, rho: x^2 + 2, starting 1000 iterations on C143
09/13/21 08:12:07, rho: x^2 + 1, starting 1000 iterations on C143
09/13/21 08:12:07, pm1: starting B1 = 150K, B2 = gmp-ecm default on C143
09/13/21 08:12:07, current ECM pretesting depth: 0.00
09/13/21 08:12:07, scheduled 30 curves at B1=2000 toward target pretesting depth of 47.67
09/13/21 08:12:07, Finished 30 curves using GMP-ECM method on C143 input, B1=2k, B2=gmp-ecm default
09/13/21 08:12:07, current ECM pretesting depth: 15.18
09/13/21 08:12:07, scheduled 74 curves at B1=11000 toward target pretesting depth of 47.67
09/13/21 08:12:10, Finished 74 curves using GMP-ECM method on C143 input, B1=11k, B2=gmp-ecm default
09/13/21 08:12:10, current ECM pretesting depth: 20.24
09/13/21 08:12:10, scheduled 214 curves at B1=50000 toward target pretesting depth of 47.67
09/13/21 08:12:11, prp26 = 23304102950704118347000297 (curve 2 stg2 B1=50000 sigma=3874399757 thread=1)
09/13/21 08:12:11, Finished 4 curves using GMP-ECM method on C143 input, B1=50k, B2=gmp-ecm default
09/13/21 08:12:11, current ECM pretesting depth: 20.34
09/13/21 08:12:11, scheduled 210 curves at B1=50000 toward target pretesting depth of 39.00
09/13/21 08:12:22, Finished 210 curves using GMP-ECM method on C117 input, B1=50k, B2=gmp-ecm default
09/13/21 08:12:22, pm1: starting B1 = 3750K, B2 = gmp-ecm default on C117
09/13/21 08:12:23, current ECM pretesting depth: 25.33
09/13/21 08:12:23, scheduled 430 curves at B1=250000 toward target pretesting depth of 39.00
09/13/21 08:13:47, Finished 430 curves using GMP-ECM method on C117 input, B1=250k, B2=gmp-ecm default
09/13/21 08:13:47, pm1: starting B1 = 15M, B2 = gmp-ecm default on C117
09/13/21 08:13:50, current ECM pretesting depth: 30.45
09/13/21 08:13:50, scheduled 904 curves at B1=1000000 toward target pretesting depth of 39.00
09/13/21 08:25:10, Finished 904 curves using GMP-ECM method on C117 input, B1=1M, B2=gmp-ecm default
09/13/21 08:25:10, current ECM pretesting depth: 35.56
09/13/21 08:25:10, scheduled 1619 curves at B1=3000000 toward target pretesting depth of 39.00
09/13/21 08:31:42, prp35 = 10458847902056956740364765053965417 (curve 195 stg2 B1=3000000 sigma=2620919999 thread=0)
09/13/21 08:31:49, Finished 197 curves using GMP-ECM method on C117 input, B1=3M, B2=gmp-ecm default
09/13/21 08:31:49, final ECM pretested depth: 35.98
09/13/21 08:31:49, prp84 cofactor = 67627522805179106773859180025103681923504306209525858835440580638970766947677849939
09/13/21 08:31:49, Total factoring time = 1183.1567 seconds
Note the second-last line:
prp84 cofactor = 67627522805179106773859180025103681923504306209525858835440580638970766947677849939
That number is only 83 characters long, but claims to be a prp84.

For comparison, this is what it shows on v1.34.5:
Code:
09/13/21 20:25:23 v1.34.5 @ 3930K, ****************************
09/13/21 20:25:23 v1.34.5 @ 3930K, Starting factorization of 11745986472276496655662247734956521108703066873589956247227553585499089637967910706104797828678082669016193648910144450016469882935490998359642649527365479
09/13/21 20:25:23 v1.34.5 @ 3930K, using pretesting plan: deep
09/13/21 20:25:23 v1.34.5 @ 3930K, using tune info for qs/gnfs crossover
09/13/21 20:25:23 v1.34.5 @ 3930K, ****************************
09/13/21 20:25:23 v1.34.5 @ 3930K, rho: x^2 + 3, starting 1000 iterations on C155
09/13/21 20:25:23 v1.34.5 @ 3930K, rho: x^2 + 2, starting 1000 iterations on C155
09/13/21 20:25:23 v1.34.5 @ 3930K, prp5 = 91291
09/13/21 20:25:23 v1.34.5 @ 3930K, rho: x^2 + 2, starting 1000 iterations on C150
09/13/21 20:25:23 v1.34.5 @ 3930K, prp7 = 7805879
09/13/21 20:25:23 v1.34.5 @ 3930K, rho: x^2 + 2, starting 1000 iterations on C143
09/13/21 20:25:23 v1.34.5 @ 3930K, rho: x^2 + 1, starting 1000 iterations on C143
09/13/21 20:25:23 v1.34.5 @ 3930K, pm1: starting B1 = 150K, B2 = gmp-ecm default on C143
09/13/21 20:25:23 v1.34.5 @ 3930K, current ECM pretesting depth: 0.00
09/13/21 20:25:23 v1.34.5 @ 3930K, scheduled 30 curves at B1=2000 toward target pretesting depth of 47.67
09/13/21 20:25:23 v1.34.5 @ 3930K, Finished 30 curves using Lenstra ECM method on C143 input, B1=2K, B2=gmp-ecm default
09/13/21 20:25:23 v1.34.5 @ 3930K, current ECM pretesting depth: 15.18
09/13/21 20:25:23 v1.34.5 @ 3930K, scheduled 74 curves at B1=11000 toward target pretesting depth of 47.67
09/13/21 20:25:27 v1.34.5 @ 3930K, Finished 74 curves using Lenstra ECM method on C143 input, B1=11K, B2=gmp-ecm default
09/13/21 20:25:27 v1.34.5 @ 3930K, current ECM pretesting depth: 20.24
09/13/21 20:25:27 v1.34.5 @ 3930K, scheduled 214 curves at B1=50000 toward target pretesting depth of 47.67
09/13/21 20:25:35 v1.34.5 @ 3930K, prp26 = 23304102950704118347000297 (curve 22 stg2 B1=50000 sigma=3377483298 thread=2)
09/13/21 20:25:35 v1.34.5 @ 3930K, Finished 132 curves using Lenstra ECM method on C143 input, B1=50K, B2=gmp-ecm default
09/13/21 20:25:35 v1.34.5 @ 3930K, current ECM pretesting depth: 23.33
09/13/21 20:25:35 v1.34.5 @ 3930K, scheduled 82 curves at B1=50000 toward target pretesting depth of 39.00
09/13/21 20:25:39 v1.34.5 @ 3930K, Finished 84 curves using Lenstra ECM method on C117 input, B1=50K, B2=gmp-ecm default
09/13/21 20:25:39 v1.34.5 @ 3930K, pm1: starting B1 = 3750K, B2 = gmp-ecm default on C117
09/13/21 20:25:41 v1.34.5 @ 3930K, current ECM pretesting depth: 25.34
09/13/21 20:25:41 v1.34.5 @ 3930K, scheduled 430 curves at B1=250000 toward target pretesting depth of 39.00
09/13/21 20:27:04 v1.34.5 @ 3930K, Finished 432 curves using Lenstra ECM method on C117 input, B1=250K, B2=gmp-ecm default
09/13/21 20:27:04 v1.34.5 @ 3930K, pm1: starting B1 = 15M, B2 = gmp-ecm default on C117
09/13/21 20:27:10 v1.34.5 @ 3930K, current ECM pretesting depth: 30.46
09/13/21 20:27:10 v1.34.5 @ 3930K, scheduled 904 curves at B1=1000000 toward target pretesting depth of 39.00
09/13/21 20:30:19 v1.34.5 @ 3930K, prp35 = 10458847902056956740364765053965417 (curve 40 stg2 B1=1000000 sigma=886406094 thread=1)
09/13/21 20:30:19 v1.34.5 @ 3930K, Finished 240 curves using Lenstra ECM method on C117 input, B1=1M, B2=gmp-ecm default
09/13/21 20:30:19 v1.34.5 @ 3930K, final ECM pretested depth: 31.78
09/13/21 20:30:19 v1.34.5 @ 3930K, scheduler: switching to sieve method
09/13/21 20:30:19 v1.34.5 @ 3930K, prp83 = 67627522805179106773859180025103681923504306209525858835440580638970766947677849939
09/13/21 20:30:19 v1.34.5 @ 3930K, Total factoring time = 296.4042 seconds
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