is 2 91556863 - 1
has 27561363 decimal digits
takes 331.639 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
Actual2670.324559.7015%----0.324559.7015%0.0000%
PrimeNet2715.221761.9718%400000180000007.13725.5555%12.358964.0845%2.1127%
GPU7227583.575564.0000%600000220000009.27514.1387%92.850565.4899%1.4899%
Difference-8-83.2509-4.2985%-600000-22000000-9.2751-4.1387%-92.5260-5.7884%-5.7884%

Known prime factors (1 factor, 35.6 bits, 0.00003886% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
91556863514549570071135.583281
281
2007-08-2412815.304e-118.538e-50.0001

P-1 results:
No P-1 results for M91556863


Trial Factoring results:
No TF results for M91556863


ECM factoring results:
No ECM results for M91556863


Lucas-Lehmer results:
No L-L results for M91556863


PRP results:
No PRP results for M91556863


P-1 factor-bounds graph:
100
101
100
101
102
103
104
TF factor-bounds graph:
267
230
240
250
260
270
280
290
2100
Last modified: 2007-08-24T20:33:44+00:00