is 2 6917081 - 1
has 2082249 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
Actual2674.295765.6716%----4.295765.6716%
Target2674.295765.6716%450009000000.02902.2361%4.324766.4393%
Difference----45000-900000-0.0290-2.2361%-0.0290-0.7676%

Known prime factors (1 factor, 48.4 bits, 0.00070001% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
69170813766715826376811548.42027227640
23 × 3 × 5 × 11 × 20627		-11206277.744e-60.00040.0007

P-1 results:
No P-1 results for M6917081


Trial Factoring results:
No TF results for M6917081


ECM factoring results:
No ECM results for M6917081


Lucas-Lehmer results:
No L-L results for M6917081


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-17ATHec2-1xd
376671582637681
5F532B507C59FD__no
2019-02-23J.R. Allenlaphp
376671582637681
5F532B507C59FDBDno


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
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