is 2 14381041 - 1
has 4329125 decimal digits
takes 6.887 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L5CAC44B7287338E5double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27266.499666.6667%15000004677773100177.955410.2678%244.455070.0893%3.4226%
PrimeNet2650.507363.0769%6000019000000.11134.0177%0.618664.5604%1.4835%
GPU722698.301765.2174%10000024000000.15652.9220%8.458166.2337%1.0164%
Difference+3+58.1979+1.4493%+1400000+4675373100+177.7989+7.3458%+235.9969+3.8555%+3.8555%

Known prime factors:
No known factors for M14381041

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-02T00:00:00ANONYMOUSv4_computers1750003762500---0.257--2.545%
2022-03-06T13:14:28Luminescence5950X215000004677773100---178.0--10.268%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-17T00:00:00Net_Forcev4_computers21256--0.001--
2000-09-15T00:00:00Net_Forcev4_computers21257--0.001--
2000-09-23T00:00:00Net_Forcev4_computers21258--0.003--
2000-10-28T00:00:00ANONYMOUSv4_computers21265--0.507--
2014-08-14T09:48:00NesowaManual testing265266--0.520--
2015-09-26T14:38:34NesowaManual testing266267--1.039--
2018-02-08T10:43:44ramgeisManual testing267268--2.078--
2018-02-08T10:43:44ramgeisManual testing268269--4.157--
2021-08-08T08:14:14SRBaseManual testing269270--8.314--
2021-09-01T16:49:46SRBaseManual testing270271--16.63--
2021-10-15T18:42:37-Anonymous-Manual testing271272--33.26--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.728 GHz-days
Estimated T-Level:0.050
DigitsB1CurvesCompleteFacMiss
20110001 / 1000.01099.000%
25500001 / 2800.00499.643%

New Calculation Method

Total ECM effort:0.728 GHz-days
Estimated T-Level:0.050
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.728


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-02-10T00:00:00ANONYMOUSv4_computers5CAC44B7287338E56.887
2005-06-19T00:00:00ANONYMOUSv4_computers5CAC44B7287338E56.887


PRP results:
No PRP results for M14381041


P-1 factor-bounds graph:
B1 = 1500000, B2 = 4677773100 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
B1 = 175000, B2 = 3762500 (P-1 stage 2)
B1 = 175000 (P-1 stage 1)
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1010
TF factor-bounds graph:
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Last modified: 2022-03-06T13:14:28+00:00