is 2 13657201 - 1
has 4111228 decimal digits
takes 6.059 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
Actual2672.175764.1791 %3000002030792407.30068.8778 %9.476367.3592 %
Target2698.741765.2174 %90000110000000.44032.7872 %9.182066.1869 %
Difference-2-6.5660-1.0383 %+210000+192079240+6.8603+6.0905%+0.2943+1.1723 %

Known prime factors (2 factors, 60.8 bits, 0.00044508% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1365720181943207826.2883
3
-136.550e-137.134e-71.309e-6
13657201242551889771134.498888
23 × 3 × 37
2008-09-088371.998e-106.163e-61.047e-5

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-07-29nordisweet16_30.8b14300000300000
skipped known factor: 81943207
skipped known factor: 24255188977
--0.2081.708%
2022-08-14nordisweet16_30.8b14300000203079240
skipped known factor: 81943207
skipped known factor: 24255188977
--8.2527.420%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-08Will EdgingtonManual testing??
34.498
11


ECM factoring results:
No ECM results for M13657201


Lucas-Lehmer results:
No L-L results for M13657201


PRP results:
dateuseridcompidcofactorsres64
2022-11-05mrhlanai
81943207
24255188977
DF51B9AE4C063003


CERT results:
dateuseridcompid
2022-11-05pomakiszap


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