is 2 56309881 - 1
has 16950964 decimal digits
takes 119.346 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2670.527761.1940%----0.527761.1940%0.0000%
PrimeNet2692.120262.3188%240000100000002.37175.3713%4.491964.3428%2.0240%
GPU7227333.970064.3836%400000130000003.33904.0622%37.308965.8304%1.4468%
Difference-6-33.4423-3.1895%-400000-13000000-3.3390-4.0622%-36.7812-4.6363%-4.6363%

Known prime factors (1 factor, 43.0 bits, 0.00007641% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5630988189586768275771343.02679548
22 × 3 × 7 × 947
-79472.535e-80.00020.0003

P-1 results:
No P-1 results for M56309881


Trial Factoring results:
No TF results for M56309881


ECM factoring results:
No ECM results for M56309881


Lucas-Lehmer results:
No L-L results for M56309881


PRP results:
No PRP results for M56309881


P-1 factor-bounds graph:
100
101
100
101
102
103
TF factor-bounds graph:
267
240
250
260
270
280
290
2100