is 2 63959209 - 1
has 19253641 decimal digits
takes 150.245 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
Actual2670.464661.1940%----0.464661.1940%0.0000%
PrimeNet2703.736062.8571%280000120000003.12875.2132%6.864764.7935%1.9363%
GPU7227459.817364.8649%400000140000003.88633.7906%63.703666.1967%1.3318%
Difference-7-59.3527-3.6708%-400000-14000000-3.8863-3.7906%-63.2390-5.0027%-5.0027%

Known prime factors (1 factor, 62.9 bits, 0.00009841% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6395920988564670821414917771962.94169235276832
25 × 167 × 12955703
2008-03-05167129557030.01972.40484.4905

P-1 results:
No P-1 results for M63959209


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-11-17T00:00:00ANONYMOUSv4_computers21250--2.34509e-6--
2003-08-25T00:00:00ANONYMOUSv4_computers21259--0.001--


ECM factoring results:
No ECM results for M63959209


Lucas-Lehmer results:
No L-L results for M63959209


PRP results:
No PRP results for M63959209


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
259
250
250
260
270
280
290
2100
Last modified: 2008-03-05T09:42:27+00:00