is 2 6917707 - 1
has 2082438 decimal digits
takes 1.508 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-daysProbability
Actual2674.295365.6716%----4.295365.6716%
Target2674.295365.6716%450009000000.02902.2362%4.324366.4393%
Difference----45000-900000-0.0290-2.2362%-0.0290-0.7676%

Known prime factors (3 factors, 111.9 bits, 0.00161819% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
691770727255765591031.344197
197		-11974.312e-113.693e-66.383e-6
691770747593824171032.148344
23 × 43		2008-09-088438.887e-113.132e-65.148e-6
69177073843130601954471548.44927777489
3 × 9259163		2014-04-04392591637.825e-60.15950.2979

4 Composite Factors:
P-1 results:
No P-1 results for M6917707


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08Will EdgingtonManual testing??32.148106.15854e-127.3412.99719e-11
2014-04-04TJAOIManual testing??48.449152.40404e-67.3411.16998e-5


ECM factoring results:
No ECM results for M6917707


Lucas-Lehmer results:
No L-L results for M6917707


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-22Oliver KruseGTX-2
2725576559
4759382417
384313060195447
CA6C0C7B7C06EF__no
2019-01-24krackerfront
2725576559
4759382417
384313060195447
CA6C0C7B7C06EFAAno


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
TF factor-bounds graph:
2
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00