is 2 67065407 - 1
has 20188700 decimal digits
takes 169.526 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L0395DA7BC61E99__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275114.096265.3333%735000178237506.10653.9286%120.202766.6952%1.3619%
PrimeNet2703.562962.8571%280000130000003.56645.3195%7.129364.8330%1.9758%
GPU7227457.046864.8649%450000150000004.55493.9289%61.601766.2453%1.3804%
Difference+1+57.0494+0.4685%+285000+2823750+1.5516-0.0003%+58.6010+0.4500%+0.4500%

Known prime factors:
No known factors for M67065407

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-08-24T02:59:00Luigi MorelliCipo273500017823750---6.107--3.929%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-12-11T07:40:00Wojciech FlorekManual testing263264--0.029--
2010-03-04T10:47:00jomateix0105264265--0.056--
2010-03-11T06:21:00Bob SchulienPII266265266--0.111--
2010-03-16T09:16:00ANONYMOUS266267--0.223--
2010-03-24T11:07:00ANONYMOUS267268--0.446--
2010-04-03T01:48:00TeraTismS268269--0.891--
2012-04-21T21:24:00qwertyuio999AOD250269270--1.783--
2013-06-25T08:20:00Le ComteManual testing270271--3.566--
2014-02-23T22:40:00Jerry HallettManual testing271272--7.131--
2014-02-23T22:40:00Jerry HallettManual testing272273--14.26--
2014-11-23T16:14:00TheJudgerManual testing273274--28.52--
2015-05-31T15:21:00XyzzyManual testing274275--57.05--


ECM factoring results:
No ECM results for M67065407


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-07-28T20:13:00doogie44Mac_Pro0395DA7BC61E99__169.5


PRP results:
No PRP results for M67065407


P-1 factor-bounds graph:
B1 = 735000, B2 = 17823750 (P-1 stage 2)
B1 = 735000 (P-1 stage 1)
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108
TF factor-bounds graph:
275
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2100
Last modified: 2015-07-28T20:13:00+00:00