is 2 68161081 - 1
has 20518530 decimal digits
takes 182.236 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2670.435959.7015%----0.435959.7015%0.0000%
PrimeNet2703.505761.4286%300000130000003.84555.3776%7.351163.5028%2.0742%
GPU7227456.129863.5135%450000150000004.81773.9368%60.947564.9499%1.4364%
Difference-7-55.6938-3.8120%-450000-15000000-4.8177-3.9368%-60.5115-5.2484%-5.2484%

Known prime factors (1 factor, 67.7 bits, 0.00009931% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
681610812380049726258368659192167.6901745900806839
3 × 72 × 71 × 167279947
2010-07-26711672799470.673135.33265.990

P-1 results:
No P-1 results for M68161081


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-07-26T05:53:00SeimDell??67.690210.237373.80.487
2000-10-07T00:00:00Jocelyn Larouchev4_computers21253--1.76042e-5--
2008-10-21T02:12:00ANONYMOUSManual testing21264--0.052--
2010-03-14T17:17:00ANONYMOUS264265--0.055--
2010-07-17T06:12:00kevindorekens265266--0.110--
2010-07-21T10:08:00kevindorekens266267--0.219--


ECM factoring results:
No ECM results for M68161081


Lucas-Lehmer results:
No L-L results for M68161081


PRP results:
No PRP results for M68161081


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
266
265
264
253
2
250
260
270
280
290
2100
Last modified: 2010-07-26T05:53:49+00:00