is 2 6951247 - 1
has 2092534 decimal digits
takes 1.516 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
Actual2674.274665.6716%----4.274665.6716%
Target2674.274665.6716%4500072000000.13752.2380%4.412166.4399%
Difference----45000-7200000-0.1375-2.2380%-0.1375-0.7683%

Known prime factors (3 factors, 138.2 bits, 0.00198756% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
695124726275713671031.291189
33 × 7
-27274.284e-118.537e-61.737e-5
695124720937592085236791650.895150603137
150603137
2014-06-1111506031372.334e-52.59434.8455
6951247707673564325295771755.9745090263404
22 × 3 × 424188617
2015-08-0644241886170.00117.307213.648

4 Composite Factors:
P-1 results:
No P-1 results for M6951247


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-06-11TJAOIManual testing??50.895161.76076e-67.3358.52066e-6
2015-02-26TJAOIManual testing255256*55.974170.0007.3340.002


ECM factoring results:
No ECM results for M6951247


Lucas-Lehmer results:
No L-L results for M6951247


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-21kkmrkkblmbrbkc4.xlarge
2627571367
2093759208523679
70767356432529577
5284DB8C974BDA__no
2019-02-07RuzovejMasa_notebook
2627571367
2093759208523679
70767356432529577
5284DB8C974BDA6Fno


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
256
2
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-06-05T21:50:05+00:00