is 2 6961739 - 1
has 2095693 decimal digits
takes 1.518 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
Actual2674.268265.6716%----4.268265.6716%
Target2674.268265.6716%450009000000.02902.2385%4.297166.4401%
Difference----45000-900000-0.0290-2.2385%-0.0290-0.7684%

Known prime factors (4 factors, 178.3 bits, 0.00256166% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
696173913923479823.7311
1
-111.606e-133.162e-76.435e-7
69617391543974475431237.16811089
13 × 853
2008-09-08138533.683e-91.858e-52.755e-5
69617391133085025168351371856.6538137945312
25 × 7 × 36330113
2015-08-0632363301130.00140.62581.1689
696173919857607995334342331960.784142619595444
22 × 32 × 233 × 17002813
2016-03-04233170028130.02880.29300.5471

11 Composite Factors:
P-1 results:
No P-1 results for M6961739


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08Will EdgingtonManual testing??37.168121.05257e-97.3335.08465e-9
2015-04-21TJAOIManual testing256257*56.653183.34273e-57.3300.000
2022-03-20LordJuliusManual testing2126056.653180.0017.3300.007
2022-03-20LordJuliusManual testing2126023.73181.60557e-137.3337.75603e-13
2022-03-20LordJuliusManual testing2126037.168123.68257e-97.3331.77894e-8
2016-03-04TJAOIManual testing260261*60.784190.0077.2890.032


ECM factoring results:
No ECM results for M6961739


Lucas-Lehmer results:
No L-L results for M6961739


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-24kkmrkkblmbrbkc4.xlarge
13923479
154397447543
113308502516835137
1985760799533434233
83F7C59A6B17F8__no
2019-02-10ATHec2-PRPCFDC
13923479
154397447543
113308502516835137
1985760799533434233
83F7C59A6B17F820no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
261
260
257
2
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00