is 2 91556851 - 1
has 27561359 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%92.850665.4899%1.4899%
Difference-8-83.2509-4.2985%-600000-22000000-9.2751-4.1387%-92.5260-5.7884%-5.7884%

Known prime factors (2 factors, 103.8 bits, 0.00011337% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
915568515723951210818011549.0243125900
22 × 52 × 31259
2007-08-2425312591.312e-60.00910.0167
91556851308264446277958411754.775168345920
26 × 5 × 179 × 2939
2014-12-1417929393.960e-50.00170.0019

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
915568511764490650524863436949008858964132103.799
P-1 results:
No P-1 results for M91556851


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-12-14T12:36:00TJAOIManual testing254255*54.775171.33894e-5680.62.74766e-5


ECM factoring results:
No ECM results for M91556851


Lucas-Lehmer results:
No L-L results for M91556851


PRP results:
No PRP results for M91556851


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
TF factor-bounds graph:
267
255
240
250
260
270
280
290
2100
Last modified: 2014-12-14T12:36:00+00:00