is 2 86143523 - 1
has 25931785 decimal digits
takes 277.454 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
Actual276177.656964.4737 %685000125012506.20573.3925 %183.862665.6789 %
Target27588.827464.0000 %5500009500000026.60103.9506 %115.428565.4222 %
Difference+1+88.8295+0.4737 %+135000-82498750-20.3953-0.5581 %+68.4342+0.2567 %

Known prime factors (1 factor, 94.3 bits, 0.00010944% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
86143523240112722961416738890488446792994.278139367833238847648993
3 × 23 × 271 × 853 × 877 × 4073 × 2446139
2018-02-214073244613963,840,2560.64041.1625

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-02-21caddrManual testing6850001250125022994.2786.9793.740%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-20Architects Cubedm1_522642650.043
2011-03-03Michael CManual testing2652660.087
2013-03-01Florimond C.ichthys12662670.173
2013-06-19Fabrice Belletlinux102672680.347
2013-08-22Jim Donovan6-67_2682690.694
2013-08-24Jim Donovan6-67_2692701.388
2015-02-12monstManual testing2702712.776
2017-03-25Strolling JellyfishManual testing27127438.86
2017-12-10TheJudgerManual testing274276133.2


ECM factoring results:
No ECM results for M86143523


Lucas-Lehmer results:
No L-L results for M86143523


PRP results:
No PRP results for M86143523


CERT results:
No CERT results for M86143523


P-1 factor-bounds graph:
B1 = 685000, B2 = 12501250 (P-1 stage 2)
B1 = 685000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
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
290
2100
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Last modified: 2024-03-13T02:15:48+00:00