is 2 6989357 - 1
has 2104007 decimal digits
takes 1.524 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
Actual2674.251365.6716%----4.251365.6716%
Target2674.251365.6716%450009000000.02902.2400%4.280366.4406%
Difference----45000-900000-0.0290-2.2400%-0.0290-0.7689%

Known prime factors (2 factors, 101.9 bits, 0.00145852% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6989357349887211431135.0262503
2503		-125031.010e-94.342e-58.049e-5
69893571391150738095191157992166.9159951922173207
3 × 7 × 473901055867		2020-12-1674739010558673.15308,163.615,247

1 Composite Factors:
P-1 results:
No P-1 results for M6989357


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2020-12-16TJAOIManual testing266267*66.915211.0403.0772.100


ECM factoring results:
No ECM results for M6989357


Lucas-Lehmer results:
No L-L results for M6989357


PRP results:
dateuseridcompidcofactorsres64PRP
2018-02-07Oliver KruseGTX-6
34988721143
52B38A0D967721__no
2019-02-19kkmrkkblmbrbkc5.large
34988721143
52B38A0D9677214Cno
2020-12-16mrhw
34988721143
139115073809519115799
52B38A0D9677214Cno


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00