is 2 85141391 - 1
has 25630113 decimal digits
takes 274.226 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
Actual276179.748064.4737 %6850006850003.19911.4249 %182.947164.9799 %
Target27589.873064.0000 %5500009500000026.60103.9449 %116.474065.4202 %
Difference+1+89.8750+0.4737 %+135000-94315000-23.4019-2.5200 %+66.4731-0.4403 %

Known prime factors (1 factor, 76.9 bits, 0.00009029% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
851413911385858045177450530146312476.875813856826215965
3 × 5 × 7 × 43 × 911 × 9629 × 20549
2017-12-20962920549347.240.04770.0915

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2017-12-20hpadirManual testing68500068500012476.8753.5981.600%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-24Architects Cubedm1_712642650.044
2013-02-03E.Lechner2652660.088
2013-02-28Freaks32Manual testing2662670.176
2013-03-01SMoffatManual testing2672680.351
2013-03-02arnaudGTI032682690.702
2013-06-18g0bManual testing2692701.404
2013-07-16Le ComteManual testing2702712.809
2017-03-02ANONYMOUSManual testing27127439.32
2017-08-22Kevin JagetManual testing274276134.8


ECM factoring results:
No ECM results for M85141391


Lucas-Lehmer results:
No L-L results for M85141391


PRP results:
No PRP results for M85141391


CERT results:
No CERT results for M85141391


P-1 factor-bounds graph:
B1 = 685000 (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
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00