is 2 13013813 - 1
has 3917549 decimal digits
takes 5.316 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
Actual2672.283364.1791 %3000002298681007.58578.9677 %9.868967.3914 %
Target2684.580164.7059 %90000120000000.43763.1693 %5.017865.8245 %
Difference-1-2.2969-0.5268 %+210000+217868100+7.1481+5.7984%+4.8512+1.5670 %

Known prime factors (2 factors, 68.7 bits, 0.00052765% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1301381385110337031032.987327
3 × 109
-31094.708e-115.197e-66.317e-6
13013813550744566171135.6812116
22 × 232
2008-09-085295295.128e-100.00030.0006

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-05-26nordisweet16_30.8b14300000300000
skipped known factor: 8511033703
skipped known factor: 55074456617
--0.1781.914%
2022-05-29nordisweet16_30.8b14300000229868100
skipped known factor: 8511033703
skipped known factor: 55074456617
--8.8938.208%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-08Will EdgingtonManual testing??
35.681
11


ECM factoring results:
No ECM results for M13013813


Lucas-Lehmer results:
No L-L results for M13013813


PRP results:
dateuseridcompidcofactorsres64
2022-07-31kutensterra
8511033703
55074456617
1C9136EAAD681216


CERT results:
dateuseridcompid
2022-07-31Jason VK4FJGSMini_Tower


P-1 factor-bounds graph:
B1 = 300000, B2 = 229868100 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
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109
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