is 2 64836427 - 1
has 19517710 decimal digits
takes 157.273 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
Actual2670.458361.1940%----0.458361.1940%0.0000%
PrimeNet2703.685462.8571%280000130000003.42245.2974%7.107864.8248%1.9676%
GPU7227459.008064.8649%450000140000004.17943.8605%63.187366.2213%1.3564%
Difference-7-58.5497-3.6708%-450000-14000000-4.1794-3.8605%-62.7290-5.0272%-5.0272%

Known prime factors (2 factors, 79.0 bits, 0.00012186% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
64836427648364271929.2725
5
-151.104e-124.284e-67.158e-6
648364279391199850601511549.7387242225
3 × 52 × 61 × 1583
2008-09-296115831.829e-60.00050.0006

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
648364276088918444950556942649212479.011
P-1 results:
No P-1 results for M64836427


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-29T08:34:00markrManual testing??49.738156.72228e-7324.31.38605e-6


ECM factoring results:
No ECM results for M64836427


Lucas-Lehmer results:
No L-L results for M64836427


PRP results:
No PRP results for M64836427


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2008-09-29T08:34:55+00:00