is 2 68161153 - 1
has 20518552 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
Actual27456.129763.5135%----56.129763.5135%0.0000%
PrimeNet2703.505761.4286%300000130000003.84555.3776%7.351163.5028%2.0742%
GPU7227456.129763.5135%450000150000004.81773.9368%60.947464.9499%1.4364%
Difference----450000-15000000-4.8177-3.9368%-4.8177-1.4364%-1.4364%

Known prime factors (1 factor, 75.3 bits, 0.00011046% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
68161153461698598199721604331772375.289338681622800396
22 × 1423 × 12959 × 4591507
2013-11-06129594591507208.391.01731.8113

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-11-06T12:35:00Jwb52zClay2375.289-364.5-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-10-07T00:00:00Jocelyn Larouchev4_computers21253--1.76042e-5--
2008-10-21T02:12:00ANONYMOUSManual testing21264--0.052--
2010-07-25T18:38:00SAHS Tech Deptcad1264265--0.055--
2010-07-26T12:27:00GrunwalderGIMPcompute-0-2265266--0.110--
2010-07-29T19:38:00David Barleyken2266267--0.219--
2010-07-31T18:49:00David Barleyken2267268--0.439--
2010-08-03T11:06:00David Barleyken2268269--0.877--
2013-05-08T23:31:00ANONYMOUS269270--1.754--
2013-07-31T06:26:00Juergen KampmeierManual testing270271--3.508--
2013-07-31T06:26:00Juergen KampmeierManual testing271272--7.017--
2013-07-31T06:26:00Juergen KampmeierManual testing272273--14.03--
2013-10-31T22:39:00Jerry HallettManual testing273274--28.07--


ECM factoring results:
No ECM results for M68161153


Lucas-Lehmer results:
No L-L results for M68161153


PRP results:
No PRP results for M68161153


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
274
273
272
271
270
269
268
267
266
265
264
253
250
260
270
280
290
2100
Last modified: 2013-11-06T12:35:32+00:00