is 2 12784999 - 1
has 3848669 decimal digits
takes 5.222 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 PRP tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP6CED5BE369824995PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.324164.1791 %40000042845985014.05019.9945 %16.374267.7592 %
Target2684.662164.7059 %90000120000000.43763.1611 %5.099765.8216 %
Difference-1-2.3380-0.5268 %+310000+416459850+13.6125+6.8335%+11.2745+1.9377 %

Known prime factors (1 factor, 33.9 bits, 0.00026505% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12784999158789687591133.886621
33 × 23
-27271.015e-101.599e-53.255e-5

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-05-09nordisweet16_30.8b14400000400000
skipped known factor: 15878968759
--0.2372.161%
2022-05-09nordisweet16_30.8b14400000428459850
skipped known factor: 15878968759
--16.479.187%


Trial Factoring results:
575859606162636465666768
No TF results for M12784999


ECM factoring results:
No ECM results for M12784999


Lucas-Lehmer results:
No L-L results for M12784999


PRP results:
dateuseridcompidcofactorsres64
2022-05-09kutensterra
15878968759
6CED5BE369824995


CERT results:
dateuseridcompid
2022-05-09Sparhawk1962


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