is 2 70331257 - 1
has 21171818 decimal digits
takes 188.038 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
Actual2670.422559.7015 %----0.422559.7015 %
Target27454.397863.5135 %4500008000000018.54674.0012 %72.944564.9734 %
Difference-7-53.9753-3.8120 %-450000-80000000-18.5467-4.0012 %-72.5220-5.2719 %

Known prime factors (1 factor, 66.5 bits, 0.00009453% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
703312571031687928667809576492166.484733449089832
23 × 3 × 3571 × 8557933
2009-11-13357185579330.26301.82073.3760

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-11-13ahmeraliv4_computers2166.4845.1620.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-01-04ahmeraliv4_computers??
66.484
21
2007-08-14Amperiov4_computers212630.014
2008-11-27Wojciech FlorekManual testing212640.028


ECM factoring results:
No ECM results for M70331257


Lucas-Lehmer results:
No L-L results for M70331257


PRP results:
No PRP results for M70331257


CERT results:
No CERT results for M70331257


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
264
263
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00