is 2 39781433 - 1
has 11975405 decimal digits
takes 58.636 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
Actual2693.001162.3188 %----3.001162.3188 %
Target27224.039763.8889 %260000400000005.18313.6738 %29.222865.2155 %
Difference-3-21.0386-1.5700 %-260000-40000000-5.1831-3.6738 %-26.2217-2.8967 %

Known prime factors (1 factor, 78.2 bits, 0.00019659% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
397814333484486819942213210630732478.2054379539092950992
24 × 17 × 229 × 155569 × 451961
2009-04-241555694519612,195.70.36700.6767

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-04-24Dru89home-xp2478.2051.4730.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2006-11-09ahmeraliv4_computers212691.503


ECM factoring results:
No ECM results for M39781433


Lucas-Lehmer results:
No L-L results for M39781433


PRP results:
No PRP results for M39781433


CERT results:
No CERT results for M39781433


P-1 factor-bounds graph:
104
105
106
104
105
106
TF factor-bounds graph:
269
this exponent TF target: 72
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00