is 2 43865573 - 1
has 13204854 decimal digits
takes 66.956 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
Actual2681.358861.7647 %----1.358861.7647 %
Target27221.801563.8889 %300000500000006.65703.9716 %28.458565.3231 %
Difference-4-20.4427-2.1242 %-300000-50000000-6.6570-3.9716 %-27.0997-3.5584 %

Known prime factors (1 factor, 79.0 bits, 0.00018010% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
438655736047585289662139053379912479.00076893316188599815
32 × 5 × 13 × 17 × 172709 × 4013363
2009-06-0417270940133633,380.10.84540.9039

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-06-04MCASM08-POD4-132479.00073.4060.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2007-09-13ANONYMOUSv4_computers212680.681


ECM factoring results:
No ECM results for M43865573


Lucas-Lehmer results:
No L-L results for M43865573


PRP results:
No PRP results for M43865573


CERT results:
No CERT results for M43865573


P-1 factor-bounds graph:
104
105
106
104
105
106
107
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