is 2 13274879 - 1
has 3996137 decimal digits
takes 5.890 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-
PRP911E56B4250737__PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672.238464.1791 %3000002101291507.54778.8881 %9.786067.3629 %
Target2684.490164.7059 %90000120000000.47543.1786 %4.965465.8277 %
Difference-1-2.2517-0.5268 %+210000+198129150+7.0723+5.7094%+4.8206+1.5351 %

Known prime factors (3 factors, 190.2 bits, 0.00143244% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
13274879982341047929.87237
37
-1375.431e-121.905e-62.513e-6
1327487931695152319789577278412271.425119380192918480
24 × 5 × 13 × 53 × 251 × 8628779
2022-06-22251862877938.6650.30260.5649
132748795608176633638041065109413372788.85821123268368917114292
22 × 3 × 421 × 8297 × 234727 × 2146909
2022-06-2223472721469099,333,8990.21800.3073

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-06-19nordisweet16_30.8b14300000300000
skipped known factor: 982341047
--0.1781.920%
2022-06-22nordisweet16_30.8b14300000210129150249160.2828.5328.133%


Trial Factoring results:
575859606162636465666768
No TF results for M13274879


ECM factoring results:
No ECM results for M13274879


Lucas-Lehmer results:
No L-L results for M13274879


PRP results:
dateuseridcompidcofactorsres64
2022-07-03prime23work
982341047
3169515231978957727841
560817663363804106510941337
911E56B4250737C0


CERT results:
dateuseridcompid
2022-07-05Richard Thomasdjinn.pc


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