is 2 87222181 - 1
has 26256493 decimal digits
takes 280.928 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
Actual2670.340759.7015%----0.340759.7015%0.0000%
PrimeNet2715.481261.9718%360000170000005.91535.3979%11.396464.0246%2.0527%
GPU7227587.728964.0000%550000200000007.51763.9951%95.246565.4382%1.4382%
Difference-8-87.3883-4.2985%-550000-20000000-7.5176-3.9951%-94.9058-5.7367%-5.7367%

Known prime factors (1 factor, 50.7 bits, 0.00005817% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8722218118728247271033671650.73410735943
139 × 77237
2007-08-16139772373.091e-60.02030.0367

P-1 results:
No P-1 results for M87222181


Trial Factoring results:
No TF results for M87222181


ECM factoring results:
No ECM results for M87222181


Lucas-Lehmer results:
No L-L results for M87222181


PRP results:
No PRP results for M87222181


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2007-08-16T13:40:19+00:00