is 2 86281199 - 1
has 25973229 decimal digits
takes 277.897 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276177.373564.4737 %700000138250006.60873.4742 %183.982265.7079 %
Target27588.685764.0000 %5500009500000026.60103.9514 %115.286765.4225 %
Difference+1+88.6878+0.4737 %+150000-81175000-19.9923-0.4772 %+68.6955+0.2854 %

Known prime factors (1 factor, 79.7 bits, 0.00009236% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
862811999722081147375791850116812479.6865633951115686160
24 × 3 × 5 × 4597 × 4871 × 1048357
2018-05-04487110483571,713.90.28830.4982

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-05-04jackwingg-021700000138250001222479.6866.6093.829%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-21Architects Cubedm1_162642650.043
2010-11-29Michael CManual testing2642660.130
2013-03-01Freaks32Manual testing2662670.173
2013-03-08wangyun183Manual testing2672680.346
2013-03-09SMoffatManual testing2682702.079
2014-01-21ramgeisManual testing27027319.40
2017-05-26ANONYMOUSManual testing27327422.17
2017-12-27Brian BeuningManual testing27427544.34
2018-01-28TheJudgerManual testing27527688.69


ECM factoring results:
No ECM results for M86281199


Lucas-Lehmer results:
No L-L results for M86281199


PRP results:
No PRP results for M86281199


CERT results:
No CERT results for M86281199


P-1 factor-bounds graph:
B1 = 700000, B2 = 13825000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
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108
TF factor-bounds graph:
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273
270
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this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00