is 2 6941309 - 1
has 2089543 decimal digits
takes 1.514 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
Actual2674.280765.6716%----4.280765.6716%
Target2674.280765.6716%450009000000.02902.2374%4.309766.4397%
Difference----45000-900000-0.0290-2.2374%-0.0290-0.7681%

Known prime factors (3 factors, 88.6 bits, 0.00127652% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
694130955530473825.7274
22		-446.445e-131.265e-62.574e-6
6941309721896137929.42752
22 × 13		2008-09-084131.042e-111.420e-62.574e-6
6941309117585774471133.453847
7 × 112		2008-09-081211211.951e-103.826e-57.786e-5

4 Composite Factors:
P-1 results:
No P-1 results for M6941309


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08Will EdgingtonManual testing??33.453113.02241e-117.3371.46506e-10
2008-09-08Will EdgingtonManual testing??29.42791.15972e-137.3375.62155e-13


ECM factoring results:
No ECM results for M6941309


Lucas-Lehmer results:
No L-L results for M6941309


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-26Oliver KruseGTX-0
55530473
721896137
11758577447
DEF972C9550E95__no
2019-02-02kkmrkkblmbrbkc5.large
55530473
721896137
11758577447
DEF972C9550E9526no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
TF factor-bounds graph:
2
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00