is 2 21831697 - 1
has 6571996 decimal digits
takes 15.472 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
Actual2671.361062.6866 %----1.361062.6866 %
Target2695.468563.7681 %160000250000001.55513.9262 %7.023665.1907 %
Difference-2-4.1075-1.0815 %-160000-25000000-1.5551-3.9262 %-5.6626-2.5041 %

Known prime factors (2 factors, 75.1 bits, 0.00034401% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2183169757635680091032.424132
22 × 3 × 11
2011-06-244112.696e-114.502e-68.365e-6
2183169770451759486891342.680161352
23 × 35 × 83
2011-06-242432435.165e-80.00020.0005

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-06-24AxonManual testing2375.1040.9410.000%


Trial Factoring results:
57585960616263646566676869
No TF results for M21831697


ECM factoring results:
No ECM results for M21831697


Lucas-Lehmer results:
No L-L results for M21831697


PRP results:
No PRP results for M21831697


CERT results:
No CERT results for M21831697


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
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