is 2 20563811 - 1
has 6190324 decimal digits
takes 14.573 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
Actual2671.445062.6866 %----1.445062.6866 %
Target2695.805763.7681 %150000225000001.40543.7730 %7.211165.1351 %
Difference-2-4.3607-1.0815 %-150000-22500000-1.4054-3.7730 %-5.7661-2.4486 %

Known prime factors (1 factor, 25.3 bits, 0.00012300% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2056381141127623825.2941
1
-112.174e-131.028e-62.091e-6

P-1 results:
No P-1 results for M20563811


Trial Factoring results:
57585960616263646566676869
No TF results for M20563811


ECM factoring results:
No ECM results for M20563811


Lucas-Lehmer results:
No L-L results for M20563811


PRP results:
No PRP results for M20563811


CERT results:
No CERT results for M20563811


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