is 2 6948941 - 1
has 2091840 decimal digits
takes 1.515 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
Actual2674.276065.6716%----4.276065.6716%
Target2674.276065.6716%450009000000.02902.2378%4.305066.4399%
Difference----45000-900000-0.0290-2.2378%-0.0290-0.7682%

Known prime factors (3 factors, 150.6 bits, 0.00216702% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
69489412517601324311237.87318115
5 × 3623		-536235.062e-96.391e-50.0001
694894185591534304375511652.926615860275
52 × 17 × 97 × 14939		2014-08-2997149399.409e-50.00030.0005
69489419935720207830949931859.78571490894856
23 × 2797 × 3194981		2015-12-14279731949810.01840.05590.1028

4 Composite Factors:
P-1 results:
No P-1 results for M6948941


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-08-29TJAOIManual testing??52.926167.75552e-67.3353.75444e-5
2015-12-14TJAOIManual testing259260*59.785180.0077.3130.036


ECM factoring results:
No ECM results for M6948941


Lucas-Lehmer results:
No L-L results for M6948941


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-20kkmrkkblmbrbkc4.xlarge
251760132431
8559153430437551
993572020783094993
1D2562586D4255__no
2019-02-07J.R. Allenlapdell
251760132431
8559153430437551
993572020783094993
1D2562586D425570no


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