is 2 85047901 - 1
has 25601970 decimal digits
takes 273.925 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
Actual276179.945664.4737 %6800006800003.17571.4200 %183.121364.9782 %
Target27589.971864.0000 %5500009500000026.60103.9444 %116.572865.4200 %
Difference+1+89.9738+0.4737 %+130000-94320000-23.4253-2.5244 %+66.5485-0.4418 %

Known prime factors (1 factor, 85.7 bits, 0.00010073% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
85047901615591026000641110567781932685.670361908417940050696
23 × 3 × 112 × 13 × 192 × 107 × 1291 × 192239
2018-04-111291192239126,3540.05460.0914

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-04-11Architects Cubeda3_mb68000068000012685.6703.0771.595%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-24Architects Cubedm1_052642650.044
2013-01-23E.Lechner2652660.088
2013-02-24Freaks32Manual testing2662670.176
2013-02-28Freaks32Manual testing2672680.351
2014-02-12SMoffatManual testing2682690.703
2014-02-16SMoffatManual testing2692701.406
2014-08-19GrunwalderGIMPcompute-0-82702712.812
2017-03-02ANONYMOUSManual testing27127439.36
2017-07-23TheJudgerManual testing274276135.0


ECM factoring results:
No ECM results for M85047901


Lucas-Lehmer results:
No L-L results for M85047901


PRP results:
No PRP results for M85047901


CERT results:
No CERT results for M85047901


P-1 factor-bounds graph:
B1 = 680000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
276
274
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00