is 2 68732597 - 1
has 20690574 decimal digits
takes 183.764 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
Actual2716.955661.9718%740000164650006.19015.6528%13.145864.1215%2.1496%
PrimeNet2703.476561.4286%300000130000003.84555.3831%7.322063.5049%2.0764%
GPU7227455.663063.5135%450000150000004.81773.9409%60.480864.9514%1.4379%
Difference-3-48.7074-1.5417%+290000+1465000+1.3724+1.7118%-47.3350-0.8300%-0.8300%

Known prime factors (1 factor, 85.0 bits, 0.00012366% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
68732597385812720995213969379334012684.996280662115091631100
22 × 52 × 821 × 295591 × 11565101
2013-10-202955911156510163,4173.52624.5623

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-10-20T09:38:00Jwb52zClay740000164650002684.9966.190367.512.385.653%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-03-08T00:00:00mdrgv4_computers21260--0.002--
2004-07-26T00:00:00mdrgv4_computers21261--0.004--
2008-10-27T00:25:001997rj7Manual testing21264--0.052--
2010-01-28T05:18:00Frank BalzerBerlinOrgano264265--0.054--
2010-04-07T20:15:00ANONYMOUS265266--0.109--
2010-04-22T09:17:00Team_Inspectorspudboy2266267--0.217--
2010-04-29T10:36:00Scuderposao_laptop267268--0.435--
2010-04-30T14:54:00GrunwalderGIMPcompute-0-7268269--0.870--
2012-03-15T07:45:00qwertyuio999PC6269270--1.740--
2012-08-05T13:27:00SMoffatManual testing270271--3.479--


ECM factoring results:
No ECM results for M68732597


Lucas-Lehmer results:
No L-L results for M68732597


PRP results:
No PRP results for M68732597


P-1 factor-bounds graph:
B1 = 740000, B2 = 16465000 (P-1 stage 2)
B1 = 740000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2013-10-20T09:38:54+00:00