is 2 6994177 - 1
has 2105458 decimal digits
takes 1.525 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
Actual2674.248465.6716 %843000206877132035.889512.1304 %40.137969.8358 %
Target2674.248465.6716 %4500045000000.09102.2402 %4.339466.4407 %
Difference---+798000+2064271320+35.7985+9.8902%+35.7985+3.3951 %

Known prime factors (3 factors, 141.8 bits, 0.00202799% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
699417793404016513591343.087667727
667727
-16677272.563e-70.01150.0215
6994177626121942361431445.8324476023
4476023
1999-07-27144760231.231e-60.07710.1440
699417785382453663366811652.923610382420
22 × 5 × 43 × 47 × 15101
2014-08-2947151010.00010.00030.0005

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2024-01-03Stef42Manual testing8430002068771320
skipped known factor: 9340401651359
skipped known factor: 62612194236143
skipped known factor: 8538245366336681
--33.3712.130%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-07-27ANONYMOUSv4_computers??
45.832
14
2008-09-08Will EdgingtonManual testing??
45.832
14
2014-08-29TJAOIManual testing??
52.923
16
7.46441e-5


ECM factoring results:
No ECM results for M6994177


Lucas-Lehmer results:
No L-L results for M6994177


PRP results:
dateuseridcompidcofactorsres64
2017-11-01kkmrkkblmbrbkc4.xlarge
9340401651359
62612194236143
8538245366336681
0C7A736682FE480E
2019-02-20ATHec2-PRPCFDC
9340401651359
62612194236143
8538245366336681
0C7A736682FE480E


CERT results:
No CERT results for M6994177


P-1 factor-bounds graph:
B1 = 843000, B2 = 2068771320 (P-1 stage 2)
B1 = 843000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
this exponent TF target: 67
TF double-checked to: 67
250
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270
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Last modified: 2024-03-13T02:15:48+00:00