is 2 42235679 - 1
has 12714207 decimal digits
takes 62.254 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
Actual2681.411261.7647 %----1.411261.7647 %
Target27222.642863.8889 %300000450000005.84623.8713 %28.489065.2869 %
Difference-4-21.2315-2.1242 %-300000-45000000-5.8462-3.8713 %-27.0777-3.5221 %

Known prime factors (1 factor, 72.7 bits, 0.00017223% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4223567979063529238657012738892272.74493598032647536
24 × 113 × 112261 × 461147
2009-10-0111226146114722.6430.28060.4883

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-10-01V-glass Pngosw7emakr2272.7441.2590.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2007-08-14Dk Systemsv4_computers212680.708


ECM factoring results:
No ECM results for M42235679


Lucas-Lehmer results:
No L-L results for M42235679


PRP results:
No PRP results for M42235679


CERT results:
No CERT results for M42235679


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
268
this exponent TF target: 72
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00