is 2 13287269 - 1
has 3999867 decimal digits
takes 5.895 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
Actual2672.236364.1791 %3000002101291507.54778.8890 %9.783967.3632 %
Target2684.485964.7059 %90000120000000.47543.1790 %4.961265.8279 %
Difference-1-2.2496-0.5268 %+210000+198129150+7.0723+5.7099%+4.8227+1.5353 %

Known prime factors (1 factor, 38.2 bits, 0.00028733% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
132872693111081163671238.17911707
23 × 509
-235094.228e-93.183e-53.305e-5

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-06-19nordisweet16_30.8b14300000300000
skipped known factor: 311108116367
--0.1781.921%
2022-06-23nordisweet16_30.8b14300000210129150
skipped known factor: 311108116367
--8.5328.134%


Trial Factoring results:
575859606162636465666768
No TF results for M13287269


ECM factoring results:
No ECM results for M13287269


Lucas-Lehmer results:
No L-L results for M13287269


PRP results:
dateuseridcompidcofactorsres64
2022-07-08Wentao HuangManual testing
311108116367
2F8274251128C6AF


CERT results:
dateuseridcompid
2022-07-08VikkiMtFVikki_s_IdeaPad


P-1 factor-bounds graph:
B1 = 300000, B2 = 210129150 (P-1 stage 2)
B1 = 300000 (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