is 2 89365181 - 1
has 26901601 decimal digits
takes 301.277 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
Actual276171.252364.4737 %725000143187507.16453.5300 %178.416865.7278 %
Target27585.625264.0000 %60000010000000029.40654.0536 %115.031665.4593 %
Difference+1+85.6271+0.4737 %+125000-85681250-22.2419-0.5236 %+63.3852+0.2685 %

Known prime factors (1 factor, 81.6 bits, 0.00009132% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8936518136849594377219934342590632581.60820617422784171351
349 × 1823 × 5237 × 6187849
2018-11-19523761878498,292.61.67223.0780

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-11-19TheJudgerManual testing725000143187501222581.6087.6983.888%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-09Architects Cubedm1_482642650.042
2013-03-17GrunwalderGIMPcompute-0-12652660.084
2013-03-19rx7350RMCpc122662670.167
2013-03-20rx7350RMCpc122672680.334
2013-07-26SMoffatManual testing2682690.669
2013-07-27SMoffatManual testing2692701.338
2013-08-16bamManual testing2702712.676
2017-07-18monstManual testing2712725.352
2017-09-26RichD0Manual testing27227310.70
2017-09-29gcardonaManual testing27327421.41
2018-10-14TheJudgerManual testing274276128.4


ECM factoring results:
No ECM results for M89365181


Lucas-Lehmer results:
No L-L results for M89365181


PRP results:
No PRP results for M89365181


CERT results:
No CERT results for M89365181


P-1 factor-bounds graph:
B1 = 725000, B2 = 14318750 (P-1 stage 2)
B1 = 725000 (P-1 stage 1)
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102
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105
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108
TF factor-bounds graph:
276
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273
272
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00