is 2 85758623 - 1
has 25815918 decimal digits
takes 276.214 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LCA147F8D167E35__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276178.454364.4737%690000136275006.51433.4551%184.968665.7011%1.2275%
PrimeNet2715.574761.9718%360000170000005.91535.3869%11.490064.0204%2.0485%
GPU7227589.226164.0000%550000190000007.26313.9485%96.489365.4214%1.4214%
Difference+1+89.2282+0.4737%+140000-5372500-0.7488-0.4934%+88.4794+0.2797%+0.2797%

Known prime factors:
No known factors for M85758623

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-02-04T23:21:59kha1obxh16900001362750012---6.514--3.455%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-28T13:20:00Architects Cubedm1_77264265--0.044--
2013-02-26T10:45:00JMGarciamarobles265266--0.087--
2013-06-17T17:10:00PEDManual testing266267--0.174--
2013-08-16T06:57:00ANONYMOUS267268--0.349--
2013-08-19T12:41:00KoekiePC0927268269--0.697--
2013-08-20T23:35:00GrunwalderGIMPcompute-head269270--1.394--
2014-11-29T15:20:00PascalBieriManual testing270271--2.788--
2017-03-08T18:55:17Judge HaleManual testing271272--5.577--
2017-03-08T18:55:17Judge HaleManual testing272273--11.15--
2017-05-07T18:55:54ANONYMOUSManual testing273274--22.31--
2017-10-08T15:59:10TheJudgerManual testing274275--44.61--
2017-10-08T15:59:10TheJudgerManual testing275276--89.23--


ECM factoring results:
No ECM results for M85758623


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2019-03-10T22:34:04aurashiftusslcburnin02CA147F8D167E35__276.2


PRP results:
No PRP results for M85758623


P-1 factor-bounds graph:
B1 = 690000, B2 = 13627500 (P-1 stage 2)
B1 = 690000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2019-03-10T22:34:04+00:00