is 2 12678199 - 1
has 3816519 decimal digits
takes 5.179 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
Actual2672.343764.1791 %40000042845985014.05019.9860 %16.393867.7562 %
Target2684.701464.7059 %90000110000000.40543.0968 %5.106765.7989 %
Difference-1-2.3577-0.5268 %+310000+417459850+13.6447+6.8892%+11.2871+1.9573 %

Known prime factors (2 factors, 79.1 bits, 0.00062384% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1267819926370653931031.296104
23 × 13
-8132.307e-114.900e-69.643e-6
126781992443047362807291547.7969634836
22 × 3 × 41 × 19583
2014-03-1841195832.163e-60.00070.0012

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-03-31nordisweet16_30.8b12400000400000
skipped known factor: 2637065393
skipped known factor: 244304736280729
--0.2232.158%
2022-04-24nordisweet16_30.8b14400000428459850
skipped known factor: 2637065393
skipped known factor: 244304736280729
--16.479.179%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-03-18TJAOIManual testing??
47.796
15


ECM factoring results:
No ECM results for M12678199


Lucas-Lehmer results:
No L-L results for M12678199


PRP results:
dateuseridcompidcofactorsres64
2022-07-01Andrew Bmy_custom_pc_2
2637065393
244304736280729
2FD6D5FE52EB465B


CERT results:
dateuseridcompid
2022-07-01lozcsGLA2


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