is 2 79681639 - 1
has 23986564 decimal digits
takes 248.645 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2670.372959.7015 %----0.372959.7015 %
Target27596.031064.0000 %5000008500000023.09323.7809 %119.124265.3611 %
Difference-8-95.6581-4.2985 %-500000-85000000-23.0932-3.7809 %-118.7513-5.6596 %

Known prime factors (1 factor, 66.6 bits, 0.00008362% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
796816391139248263683912355292166.627714875018876
22 × 21893 × 8163283
2011-03-192189381632830.29242.10613.7586

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-03-19tscv4_computers2166.6276.6320.000%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-04-14tscv4_computers??
66.627
21
2009-05-29Architects Cubedm1_242632640.025
2010-11-29Architects Cubedm1_422642650.047
2010-12-02MarekBK0922652660.094


ECM factoring results:
No ECM results for M79681639


Lucas-Lehmer results:
No L-L results for M79681639


PRP results:
No PRP results for M79681639


CERT results:
No CERT results for M79681639


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
266
265
264
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00