is 2 6911987 - 1
has 2080716 decimal digits
takes 1.507 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
Actual2674.298965.6716%----4.298965.6716%
Target2674.298965.6716%450009000000.02902.2359%4.327966.4392%
Difference----45000-900000-0.0290-2.2359%-0.0290-0.7675%

Known prime factors (1 factor, 25.7 bits, 0.00037212% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
691198755295897825.7214
22		-446.473e-131.265e-62.574e-6

P-1 results:
No P-1 results for M6911987


Trial Factoring results:
No TF results for M6911987


ECM factoring results:
No ECM results for M6911987


Lucas-Lehmer results:
No L-L results for M6911987


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-18Chang Chia-Tchehomura
55295897
E8C0144AA9ADC1__no
2019-02-22kkmrkkblmbrbkc5.large
55295897
E8C0144AA9ADC195no


P-1 factor-bounds graph:
100
101
100
101
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