is 2 6954191 - 1
has 2093421 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
Actual2674.272865.6716%----4.272865.6716%
Target2674.272865.6716%450009000000.02902.2381%4.301866.4399%
Difference----45000-900000-0.0290-2.2381%-0.0290-0.7683%

Known prime factors (3 factors, 113.8 bits, 0.00163602% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
695419113908383823.7291
1		-111.607e-133.162e-76.435e-7
695419142281481291031.977304
24 × 19		2008-09-0816194.385e-115.111e-61.030e-5
69541913015665754167245371858.06521682362148
22 × 293 × 18500309		2015-08-06293185003090.01090.31880.5952

4 Composite Factors:
P-1 results:
No P-1 results for M6954191


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08Will EdgingtonManual testing??31.977102.70694e-127.3351.30930e-11
2015-08-06TJAOIManual testing258259*58.065180.0057.3240.026


ECM factoring results:
No ECM results for M6954191


Lucas-Lehmer results:
No L-L results for M6954191


PRP results:
dateuseridcompidcofactorsres64PRP
2018-01-23Chang Chia-Tchehomura
13908383
4228148129
301566575416724537
5C81B80DAAE8B3__no
2019-02-08marssystemssystem03
13908383
4228148129
301566575416724537
5C81B80DAAE8B3F4no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
259
2
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00