is 2 86261143 - 1
has 25967192 decimal digits
takes 277.833 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDB09F0D7F98E74__double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276177.414764.4737%700000138250006.60873.4741%184.023465.7079%1.2342%
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%+150000-5175000-0.6544-0.4772%+88.0540+0.2854%-0.1882%

Known prime factors:
No known factors for M86261143

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-03-04T20:09:42S485122i7-47717000001382500012---6.609--3.474%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-11-21T01:20:00Architects Cubedm1_54264265--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--
2017-03-28T22:55:07Judge HaleManual testing271272--5.544--
2017-03-28T23:55:06Judge HaleManual testing272273--11.09--
2017-06-01T02:58:57ANONYMOUSManual testing273274--22.18--
2017-12-26T03:44:22RichD0Manual testing274275--44.35--
2018-01-28T15:49:48TheJudgerManual testing275276--88.71--


ECM factoring results:
No ECM results for M86261143


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2018-11-02T05:14:22-Anonymous-DB09F0D7F98E74__277.8


PRP results:
No PRP results for M86261143


P-1 factor-bounds graph:
B1 = 700000, B2 = 13825000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2018-11-02T05:14:22+00:00