is 2 6963479 - 1
has 2096217 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
Actual2674.267165.6716%----4.267165.6716%
Target2674.267165.6716%450009000000.02902.2386%4.296166.4401%
Difference----45000-900000-0.0290-2.2386%-0.0290-0.7685%

Known prime factors (3 factors, 144.6 bits, 0.00207667% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
696347913926959823.7311
1
-111.605e-133.162e-76.435e-7
69634791532399056001788571857.08911003113932
22 × 3 × 17 × 53936833
2015-05-2217539368330.00380.92911.7354
6963479159341481636462761532063.7891144122655044
22 × 3 × 317 × 300768311
2017-05-103173007683110.32225.18129.677

4 Composite Factors:
P-1 results:
No P-1 results for M6963479


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-05-22TJAOIManual testing257258*57.089180.0017.3270.005
2022-03-20LordJuliusManual testing2126323.73181.60517e-137.3337.75183e-13
2022-03-20LordJuliusManual testing2126357.089180.0047.3270.019
2017-05-10TJAOIManual testing263264*63.789200.0936.8220.418


ECM factoring results:
No ECM results for M6963479


Lucas-Lehmer results:
No L-L results for M6963479


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-25kkmrkkblmbrbkc4.xlarge
13926959
153239905600178857
15934148163646276153
430C12F1B6187E__no
2019-02-13arnaudstm-11-010
13926959
153239905600178857
15934148163646276153
430C12F1B6187E4Ano


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
264
263
258
this exponent TF target: 67
TF double-checked to: 67.8
250
260
270
Last modified: 2023-04-26T21:34:10+00:00