is 2 12870773 - 1
has 3874489 decimal digits
takes 5.257 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
Actual2672.308664.1791 %40000042845985014.050110.0013 %16.358767.7617 %
Target2684.631064.7059 %90000120000000.43763.1642 %5.068765.8227 %
Difference-1-2.3224-0.5268 %+310000+416459850+13.6125+6.8372%+11.2901+1.9390 %

Known prime factors (1 factor, 37.0 bits, 0.00028772% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
128707731405488411611237.0325460
22 × 3 × 5 × 7 × 13
-7131.681e-94.340e-68.438e-6

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-05-15nordisweet16_30.8b14400000400000
skipped known factor: 140548841161
--0.2372.163%
2022-05-17nordisweet16_30.8b14400000428459850
skipped known factor: 140548841161
--16.479.193%


Trial Factoring results:
575859606162636465666768
No TF results for M12870773


ECM factoring results:
No ECM results for M12870773


Lucas-Lehmer results:
No L-L results for M12870773


PRP results:
dateuseridcompidcofactorsres64
2022-07-19Funky Waddlemain
140548841161
50FD3A585EC09A8C


CERT results:
dateuseridcompid
2022-07-20mister_phili8


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 68
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00