is 2 20363963 - 1
has 6130164 decimal digits
takes 14.432 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
Actual2671.459162.6866 %----1.459162.6866 %
Target2695.862763.7681 %150000225000001.40543.7680 %7.268165.1333 %
Difference-2-4.4035-1.0815 %-150000-22500000-1.4054-3.7680 %-5.8089-2.4467 %

Known prime factors (2 factors, 73.9 bits, 0.00036282% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2036396340727927825.2801
1
2011-06-16112.196e-131.028e-62.091e-6
203639634280555932507511548.60510510125
3 × 53 × 28027
2011-06-16125280273.533e-60.00170.0029

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-16AxonManual testing2373.8840.9410.000%


Trial Factoring results:
57585960616263646566676869
No TF results for M20363963


ECM factoring results:
No ECM results for M20363963


Lucas-Lehmer results:
No L-L results for M20363963


PRP results:
No PRP results for M20363963


CERT results:
No CERT results for M20363963


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