is 2 14976259 - 1
has 4508304 decimal digits
takes 7.172 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L664C7C23F77C7205double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.984164.1791%2250002250000.15621.9454%2.140364.8760%0.6969%
PrimeNet2650.487263.0769%6500020000000.11834.1420%0.605564.6063%1.5294%
GPU722697.971765.2174%10000026000000.16402.9926%8.135866.2583%1.0409%
Difference-2-5.9877-1.0383%+125000-2375000-0.0078-1.0472%-5.9955-1.3823%-1.3823%

Known prime factors (1 factor, 73.0 bits, 0.00048737% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1497625993756905157123965627692272.989313018441912376
23 × 61 × 67807 × 9459661
2016-11-21678079459661117.720.40240.6684

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-02-24T00:00:00ANONYMOUSv4_computers225000225000---0.156--1.945%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-24T00:00:00Net_Forcev4_computers21257--0.001--
2000-09-08T00:00:00Net_Forcev4_computers21258--0.003--
2000-09-29T00:00:00Net_Forcev4_computers21259--0.005--
2000-12-31T00:00:00ANONYMOUSv4_computers21264--0.238--
2001-01-08T00:00:00ANONYMOUSv4_computers21265--0.487--
2016-03-16T02:31:57Mark RoseManual testing265266--0.499--
2015-10-25T10:22:37NesowaManual testing266267--0.998--


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)
2002-06-23T00:00:00ANONYMOUSv4_computers664C7C23F77C72057.172
2006-03-28T00:00:00ANONYMOUSv4_computers664C7C23F77C72057.172


PRP results:
No PRP results for M14976259


P-1 factor-bounds graph:
B1 = 225000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
267
266
265
264
259
258
257
250
260
270
280
290
2100
Last modified: 2016-11-22T04:05:46+00:00