is 2 20996069 - 1
has 6320447 decimal digits
takes 14.880 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2682.838963.2353%----2.838963.2353%0.0000%
PrimeNet2650.347561.5385%10000032000000.27635.1082%0.623863.5032%1.9647%
GPU722695.686163.7681%15000045000000.39773.7838%6.083865.1391%1.3709%
Difference-1-2.8473-0.5328%-150000-4500000-0.3977-3.7838%-3.2450-1.9038%-1.3709%

Known prime factors (2 factors, 98.8 bits, 0.00047050% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2099606917163026643371340.64240872
23 × 3 × 13 × 131
-131311.288e-81.996e-52.719e-5
209960693183993707592786731858.1447582356744
23 × 3 × 315931531
2015-08-1383159315310.003217.68833.036

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
209960695464696883573742771341617848013098.786
P-1 results:
No P-1 results for M20996069


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-08-13T11:17:00TJAOIManual testing258259*58.144180.00130.690.003
2022-06-24T03:14:34LordJuliusManual testing2126540.642131.28835e-830.692.65755e-8
2022-06-24T03:14:34LordJuliusManual testing2126558.144180.00330.690.007
2022-06-24T03:14:34LordJuliusManual testing265266--0.356--
2022-06-24T03:14:34LordJuliusManual testing266267--0.712--
2022-04-11T20:17:40LordJuliusManual testing267268--1.424--


ECM factoring results:
No ECM results for M20996069


Lucas-Lehmer results:
No L-L results for M20996069


PRP results:
No PRP results for M20996069


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
259
240
250
260
270
280
290
2100
Last modified: 2022-06-24T03:14:34+00:00