is 2 168374291 - 1
has 50685713 decimal digits
takes 1,145.881 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2670.176558.2090%----0.176558.2090%0.0000%
PrimeNet27422.722462.1622%7000004000000028.03685.5275%50.759264.2536%2.0915%
GPU72278363.574064.1026%10000004000000030.83603.9980%394.409965.5377%1.4352%
Difference-11-363.3975-5.8936%-1000000-40000000-30.8360-3.9980%-394.2335-7.3288%-7.3288%

Known prime factors (1 factor, 46.1 bits, 0.00002740% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
168374291773999778297911446.137229845
3 × 5 × 7 × 11 × 199		2007-11-16111999.743e-80.00020.0002

P-1 results:
No P-1 results for M168374291


Trial Factoring results:
No TF results for M168374291


ECM factoring results:
No ECM results for M168374291


Lucas-Lehmer results:
No L-L results for M168374291


PRP results:
No PRP results for M168374291


P-1 factor-bounds graph:
100
101
102
100
101
102
103
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2007-11-16T15:06:36+00:00