is 2 12886001 - 1
has 3879073 decimal digits
takes 5.264 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-
PRP3C08E497459141__PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.305964.1791%40000042845985014.050110.0026%16.356067.7621%3.5830%
PrimeNet2640.276262.5000%6000017000000.08854.3317%0.364764.1244%1.6244%
GPU722684.625664.7059%9000024000000.12783.1647%4.753465.8228%1.1170%
Difference-1-2.3196-0.5268%+310000+426059850+13.9223+6.8378%+11.6026+1.9393%+2.4660%

Known prime factors (2 factors, 160.6 bits, 0.00124602% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
128860012979243431211238.11611560
23 × 5 × 172
-2892894.269e-90.00020.0003
12886001724117357298208420736107909400010627337122.446280970549861903790297745557136
24 × 47 × 42131 × 79103 × 258581 × 329473 × 1315927
2022-05-1832947313159271.095e+100.22700.3971

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
12886001215732188015583199057955744194170747368771649803349160.562
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-05-12T22:59:20nordisweet16_30.8b14400000400000-
skipped known factor: 297924343121
--0.237--2.430%
2022-05-18T15:01:57nordisweet16_30.8b1440000042845985037122.44614.0510.5328.1010.003%


Trial Factoring results:
No TF results for M12886001


ECM factoring results:
No ECM results for M12886001


Lucas-Lehmer results:
No L-L results for M12886001


PRP results:
dateuseridcompidcofactorsres64PRP
2022-05-24T23:55:24Poaooffice-CN2
297924343121
7241173572982084207361079094000106273
3C08E497459141__no


P-1 factor-bounds graph:
B1 = 400000, B2 = 428459850 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-24T23:55:24+00:00