is 2 6915173 - 1
has 2081675 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
Actual2674.296965.6716%----4.296965.6716%
Target2674.296965.6716%4500072000000.13752.2360%4.434466.4392%
Difference----45000-7200000-0.1375-2.2360%-0.1375-0.7676%

Known prime factors (1 factor, 46.5 bits, 0.00067281% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
69151731013061088705911546.5267324915
5 × 13 × 112691		-131126912.006e-60.00190.0036

P-1 results:
No P-1 results for M6915173


Trial Factoring results:
No TF results for M6915173


ECM factoring results:
No ECM results for M6915173


Lucas-Lehmer results:
No L-L results for M6915173


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-18NetaniasWin10
101306108870591
89CA665638C0EC__no
2019-01-23LookAShome512
101306108870591
89CA665638C0EC35no


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
TF factor-bounds graph:
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-06-05T21:50:05+00:00