is 2 55493531 - 1
has 16705218 decimal digits
takes 117.615 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
Actual2670.535461.1940 %----0.535461.1940 %
Target27334.469764.3836 %3600006000000011.09223.9345 %45.561965.7849 %
Difference-6-33.9342-3.1895 %-360000-60000000-11.0922-3.9345 %-45.0265-4.5909 %

Known prime factors (2 factors, 103.1 bits, 0.00018572% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5549353120467124103431340.89618441
33 × 683
-276835.257e-90.00020.0002
5549353151782092602528887991962.16746655972029
23 × 37 × 5641 × 9719
2016-07-06564197190.01540.01800.0353

1 Composite Factors:
P-1 results:
No P-1 results for M55493531


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-07-06TJAOIManual testing262263*
62.167
19
0.003


ECM factoring results:
No ECM results for M55493531


Lucas-Lehmer results:
No L-L results for M55493531


PRP results:
No PRP results for M55493531


CERT results:
No CERT results for M55493531


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
TF factor-bounds graph:
this exponent TF target: 73
TF double-checked to: 67
250
260
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280
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Last modified: 2024-03-13T02:15:48+00:00