is 2 6917731 - 1
has 2082445 decimal digits
takes 1.508 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2674.295365.6716%----4.295365.6716%
Target2674.295365.6716%450009000000.02902.2362%4.324366.4393%
Difference----45000-900000-0.0290-2.2362%-0.0290-0.7676%

Known prime factors (1 factor, 54.7 bits, 0.00079122% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6917731299652887694253131754.7342165832176
24 × 135364511		-161353645110.00062.33184.3552

P-1 results:
No P-1 results for M6917731


Trial Factoring results:
No TF results for M6917731


ECM factoring results:
No ECM results for M6917731


Lucas-Lehmer results:
No L-L results for M6917731


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-22Oliver KruseGTX-2
29965288769425313
72CEB765601F05__no
2019-01-23ATHec2-PRPCFDC1
29965288769425313
72CEB765601F05BFno


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00