is 2 68988589 - 1
has 20767635 decimal digits
takes 184.449 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
Actual27455.456563.5135%6150006150002.38421.6610%57.840764.1196%0.6061%
PrimeNet2703.463661.4286%300000130000003.84555.3856%7.309163.5059%2.0773%
GPU7227455.456563.5135%450000150000004.81773.9428%60.274264.9521%1.4386%
Difference---+165000-14385000-2.4335-2.2817%-2.4335-0.8325%-0.8325%

Known prime factors (1 factor, 110.6 bits, 0.00016029% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
68988589194241468695107449616612041131799134110.58114077796887185752531959455
3 × 5 × 4871 × 40123 × 51133 × 186551 × 503423
2013-12-031865515034231.985e+90.79011.4719

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-12-03T21:41:00Jwb52zClay61500061500034110.5812.384368.94.7681.661%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-05-13T00:00:00Jocelyn Larouchev4_computers21256--0.000--
2004-06-04T00:00:00mdrgv4_computers21261--0.004--
2009-02-16T01:11:001997rj7Manual testing21264--0.052--
2010-01-27T15:11:00James Hintz13_122109264265--0.054--
2010-02-03T20:09:00Lord_Dragonsouth_lounge265266--0.108--
2010-02-08T22:11:00SAHS Physics Clubphysicsclub7266267--0.217--
2010-02-10T23:56:00Sturle Sundekuku.ifi267268--0.433--
2010-02-21T01:32:00f4t3f4t3Joe268269--0.867--
2012-03-14T11:48:00oodairaWin02269270--1.733--
2012-08-01T05:47:00GrunwalderGIMPcompute-0-0270271--3.466--
2013-11-21T06:42:00Kyle AskineManual testing271272--6.932--
2013-11-21T10:45:00Kyle AskineManual testing272273--13.86--
2013-11-27T22:40:00Jerry HallettManual testing273274--27.73--


ECM factoring results:
No ECM results for M68988589


Lucas-Lehmer results:
No L-L results for M68988589


PRP results:
No PRP results for M68988589


P-1 factor-bounds graph:
B1 = 615000 (P-1 stage 1)
104
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104
105
106
TF factor-bounds graph:
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Last modified: 2013-12-03T21:41:40+00:00