is 2 14254369 - 1
has 4290993 decimal digits
takes 6.826 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L0A22E91194A57F6Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2672.084564.1791%2050002050000.14231.8502%2.226964.8419%0.6628%
PrimeNet2650.511863.0769%6000019000000.11134.0125%0.623164.5585%1.4815%
GPU722698.375565.2174%10000024000000.15652.9182%8.531966.2324%1.0150%
Difference-2-6.2909-1.0383%+105000-2195000-0.0141-1.0680%-6.3050-1.3905%-1.3905%

Known prime factors (1 factor, 85.0 bits, 0.00059654% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14254369395926140832959351570380892685.0331388788731486323076
22 × 3 × 7 × 13 × 1271784552643153
2016-10-01131271784552643153639,66048,114,43689,864,367

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-12-22T00:00:00ANONYMOUSv4_computers205000205000---0.142--1.850%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-17T00:00:00Net_Forcev4_computers21256--0.001--
2000-10-22T00:00:00ANONYMOUSv4_computers21265--0.512--
2014-08-01T14:11:00NesowaManual testing265266--0.524--
2015-08-31T08:32:00ThaManual testing266267--1.048--


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
20110000.03296.826%
25500000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.728


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-03-10T00:00:00ANONYMOUSv4_computers0A22E91194A57F6A6.826
2005-05-28T00:00:00ANONYMOUSv4_computers0A22E91194A57F6A6.826


PRP results:
No PRP results for M14254369


P-1 factor-bounds graph:
B1 = 205000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-10-02T00:25:32+00:00