is 2 272087191 - 1
has 81906406 decimal digits
takes 3,249.930 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
Actual2670.109256.7164%----0.109256.7164%0.0000%
PrimeNet27656.246761.8421%11000006500000079.34815.5630%135.594863.9648%2.1227%
GPU72280899.956263.7500%16000006500000087.53614.0707%987.492365.2256%1.4756%
Difference-13-899.8470-7.0336%-1600000-65000000-87.5361-4.0707%-987.3831-8.5092%-8.5092%

Known prime factors (2 factors, 131.7 bits, 0.00004839% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
272087191214342267792482236872064.21739388525973
1483 × 3011 × 8821
2011-09-01301188210.02640.05760.1061
2720871912001660528012837071532167.440367834391736
23 × 3 × 7 × 2189490427
2022-08-03821894904270.18712,066.03,858.8

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
272087191429040456924968915707379777030954593311140131.656
P-1 results:
No P-1 results for M272087191


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-09-01T02:49:00Richardworkmy??64.217200.0136,6740.027
2010-03-28T17:12:00carlos56phenom810262263--0.004--
2010-03-28T17:12:00carlos56phenom810263264--0.007--
TF assumed completed to 67 but no detailed record exists
2022-08-03T11:17:31TJAOIManual testing267268*67.440210.0786,6740.160


ECM factoring results:
No ECM results for M272087191


Lucas-Lehmer results:
No L-L results for M272087191


PRP results:
No PRP results for M272087191


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
268
267
264
263
2
250
260
270
280
290
2100
Last modified: 2022-08-03T11:17:31+00:00