is 2 76425787 - 1
has 23006455 decimal digits
takes 212.692 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
Actual275100.122164.0000 %665000133000005.46143.7195 %105.583565.3390 %
Target27450.059963.5135 %5000009000000021.69484.1927 %71.754665.0433 %
Difference+1+50.0622+0.4865 %+165000-76700000-16.2334-0.4732 %+33.8288+0.2957 %

Known prime factors (1 factor, 106.3 bits, 0.00013909% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
764257879968148388359011252517345071179332106.297652145616005171870360808
23 × 32 × 35099 × 339257 × 555857 × 1368439
2016-03-0655585713684392.343e+92.42174.5650

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-06TheJudgerManual testing6650001330000012232106.2975.5334.097%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212502.00000e-6
2000-08-10ANONYMOUSv4_computers212531.57000e-5
2003-12-23markrv4_computers212620.004
2008-06-021997rj7v4_computers212640.026
2010-11-03ANONYMOUSC8CDB759B2642650.049
2010-11-10Dr. DwayneNapa2652660.098
2010-11-11GrunwalderGIMPcompute-0-12662670.196
2010-11-12ddboy3fujitsu2672680.391
2010-11-13bucky_mbbuckyMpc2682690.782
2010-11-20Martin Prusactyrka-ucitel2692701.564
2013-02-04PVasilevv4_computers212713.129
2015-11-20RichD0Manual testing2712726.258
2016-02-20Judge HaleManual testing27227312.52
2016-02-25Jerry HallettManual testing27327575.09


ECM factoring results:
No ECM results for M76425787


Lucas-Lehmer results:
No L-L results for M76425787


PRP results:
No PRP results for M76425787


CERT results:
No CERT results for M76425787


P-1 factor-bounds graph:
B1 = 665000, B2 = 13300000 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
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265
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250
this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00