is 2 13681253 - 1
has 4118468 decimal digits
takes 6.070 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
Actual2672.171964.1791 %3000002030792407.30068.8794 %9.472467.3598 %
Target2698.726365.2174 %90000110000000.44032.7880 %9.166666.1871 %
Difference-2-6.5544-1.0383 %+210000+192079240+6.8603+6.0915%+0.3058+1.1727 %

Known prime factors (1 factor, 33.2 bits, 0.00024265% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1368125398505021611033.198360
23 × 32 × 5
-999.016e-115.790e-61.178e-5

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-07-27nordisweet16_30.8b14300000300000
skipped known factor: 9850502161
--0.2081.708%
2022-08-15nordisweet16_30.8b14300000203079240
skipped known factor: 9850502161
--8.2527.421%


Trial Factoring results:
57585960616263646566676869
No TF results for M13681253


ECM factoring results:
No ECM results for M13681253


Lucas-Lehmer results:
No L-L results for M13681253


PRP results:
dateuseridcompidcofactorsres64
2022-10-10firejugglerMaison
9850502161
D685E6190D170656


CERT results:
dateuseridcompid
2022-10-10curtiscwcm202--35l


P-1 factor-bounds graph:
B1 = 300000, B2 = 203079240 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 69
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00