is 2 86613391 - 1
has 26073229 decimal digits
takes 278.967 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
Actual276176.693264.4737 %700000138250006.60873.4759 %183.301965.7085 %
Target27588.345664.0000 %5500009500000026.60103.9533 %114.946665.4232 %
Difference+1+88.3476+0.4737 %+150000-81175000-19.9923-0.4774 %+68.3553+0.2854 %

Known prime factors (1 factor, 102.6 bits, 0.00011845% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
86613391764439916601894065582631759181731102.59244129430090197834742588
22 × 3 × 17 × 73 × 101 × 251 × 4261 × 15787 × 1737677
2018-03-291578717376771.519e+90.51190.8258

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-03-29Oliver KruseHalfPM1-27000001382500012231102.5926.6093.830%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-10-24Michael CManual testing2642650.043
2010-11-29Michael CManual testing2652670.259
2013-02-28The.Lord.Of.MuffinBuero-12672680.345
2013-03-04tomfrManual testing26827321.40
2017-05-22Tim SorberaManual testing27327422.09
2018-01-26Brian BeuningManual testing27427544.17
2018-02-13Strolling JellyfishManual testing27527688.35


ECM factoring results:
No ECM results for M86613391


Lucas-Lehmer results:
No L-L results for M86613391


PRP results:
No PRP results for M86613391


CERT results:
No CERT results for M86613391


P-1 factor-bounds graph:
B1 = 700000, B2 = 13825000 (P-1 stage 2)
B1 = 700000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
268
267
265
this exponent TF target: 75
TF double-checked to: 67
250
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2110
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Last modified: 2024-03-13T02:15:48+00:00