is 2 20280059 - 1
has 6104907 decimal digits
takes 14.372 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
Actual2671.465262.6866 %----1.465262.6866 %
Target2695.886963.7681 %150000225000001.40543.7658 %7.292365.1325 %
Difference-2-4.4217-1.0815 %-150000-22500000-1.4054-3.7658 %-5.8271-2.4460 %

Known prime factors (2 factors, 75.3 bits, 0.00037137% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2028005940560119825.2741
1
2011-06-16112.205e-131.028e-62.091e-6
2028005911575573756374011650.04028539300
22 × 3 × 52 × 95131
2011-06-1625951319.893e-60.00540.0099

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-16AxonManual testing2375.3140.9410.000%


Trial Factoring results:
57585960616263646566676869
No TF results for M20280059


ECM factoring results:
No ECM results for M20280059


Lucas-Lehmer results:
No L-L results for M20280059


PRP results:
No PRP results for M20280059


CERT results:
No CERT results for M20280059


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
TF factor-bounds graph:
this exponent TF target: 69
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00