is 2 20178451 - 1
has 6074320 decimal digits
takes 14.300 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
Actual2671.472662.6866 %----1.472662.6866 %
Target2695.916563.7681 %150000200000001.26553.6723 %7.182065.0987 %
Difference-2-4.4440-1.0815 %-150000-20000000-1.2655-3.6723 %-5.7094-2.4121 %

Known prime factors (1 factor, 41.3 bits, 0.00020468% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2017845127114995315771341.30267188
22 × 3 × 11 × 509
-115092.240e-83.918e-55.279e-5

P-1 results:
No P-1 results for M20178451


Trial Factoring results:
57585960616263646566676869
No TF results for M20178451


ECM factoring results:
No ECM results for M20178451


Lucas-Lehmer results:
No L-L results for M20178451


PRP results:
No PRP results for M20178451


CERT results:
No CERT results for M20178451


P-1 factor-bounds graph:
100
101
102
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