is 2 86261117 - 1
has 25967184 decimal digits
takes 277.833 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
Actual276177.414764.4737%700000136500006.56423.4650%183.979065.7047%1.2310%
PrimeNet2715.542261.9718%360000170000005.91535.3907%11.457564.0218%2.0500%
GPU7227588.706364.0000%550000190000007.26313.9513%95.969565.4225%1.4225%
Difference+1+88.7084+0.4737%+150000-5350000-0.6989-0.4863%+88.0095+0.2822%+0.2822%

Known prime factors:
No known factors for M86261117

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-03-16T08:51:24David HruskaDesktopIIc7000001365000012---6.564--3.465%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-21T02:30:00Architects Cubedm1_25264265--0.043--
2010-11-23T20:20:00Michael CManual testing264265--0.043--
2010-11-23T20:20:00Michael CManual testing265266--0.087--
2011-03-09T00:19:00Michael CManual testing266267--0.173--
2013-03-10T10:53:00BClizzleManual testing267268--0.347--
2013-03-10T10:53:00BClizzleManual testing268269--0.693--
2013-03-10T10:53:00BClizzleManual testing269270--1.386--
2013-03-10T10:53:00BClizzleManual testing270271--2.772--
2017-04-12T08:05:04Strolling JellyfishManual testing271272--5.544--
2017-04-12T08:05:04Strolling JellyfishManual testing272273--11.09--
2017-04-12T08:05:04Strolling JellyfishManual testing273274--22.18--
2017-12-24T14:10:26RichD0Manual testing274275--44.35--
2018-01-28T15:49:46TheJudgerManual testing275276--88.71--


ECM factoring results:
No ECM results for M86261117


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2019-09-01T09:54:06Taekyung HanTaekyung_Han73D4CE2968777A__277.8


PRP results:
No PRP results for M86261117


P-1 factor-bounds graph:
B1 = 700000, B2 = 13650000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2100
Last modified: 2019-09-01T09:54:06+00:00