is 2 68439809 - 1
has 20602436 decimal digits
takes 182.981 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
Actual2703.491461.4286%----3.491461.4286%0.0000%
PrimeNet2703.491461.4286%300000130000003.84555.3803%7.336963.5038%2.0753%
GPU7227455.901263.5135%450000150000004.81773.9388%60.718964.9507%1.4371%
Difference-4-52.4098-2.0849%-450000-15000000-4.8177-3.9388%-57.2275-3.5221%-1.4371%

Known prime factors (2 factors, 126.5 bits, 0.00018490% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
684398095929305936093779531859.0414331766864
24 × 3 × 4517 × 19979
-4517199790.00210.02080.0356
684398092096017190383024720092167.5061531285096356
22 × 34 × 59 × 3671 × 21821
2022-09-223671218210.67580.01810.0290

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
6843980912427927169092674093450416032468421757739126.547
P-1 results:
No P-1 results for M68439809


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-03-10T00:00:00Jocelyn Larouchev4_computers21257--0.000--
2022-09-25T22:01:20LordJuliusManual testing25726759.041180.002376.10.004
2022-09-22T09:50:59TJAOIManual testing267268*67.506210.242375.20.496
2022-09-25T22:01:20LordJuliusManual testing26726867.506210.242375.20.496
2022-09-25T22:01:20LordJuliusManual testing268269--0.873--
2022-09-25T22:01:20LordJuliusManual testing269270--1.747--


ECM factoring results:
No ECM results for M68439809


Lucas-Lehmer results:
No L-L results for M68439809


PRP results:
No PRP results for M68439809


P-1 factor-bounds graph:
102
103
104
102
103
104
105
TF factor-bounds graph:
270
269
268
267
257
250
260
270
280
290
2100
Last modified: 2022-09-25T22:01:20+00:00