is 2 89379847 - 1
has 26906015 decimal digits
takes 301.326 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
Actual276171.224264.4737 %725000143187507.16453.5300 %178.388765.7278 %
Target27585.611164.0000 %60000010000000029.40654.0537 %115.017665.4593 %
Difference+1+85.6131+0.4737 %+125000-85681250-22.2419-0.5236 %+63.3712+0.2685 %

Known prime factors (1 factor, 76.9 bits, 0.00008609% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
893798471452364803236061697222812476.943812467716148620
22 × 32 × 5 × 7 × 47189 × 13664533
2018-11-154718913664533202.363.85746.7972

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-11-15RuzovejManual testing725000143187501222476.9437.6983.888%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-09Architects Cubedm1_062642650.042
2013-03-17SMoffatManual testing2652660.084
2013-03-18Brian V.Manual testing2662702.508
2014-03-11SMoffatManual testing2702712.675
2017-07-19monstManual testing2712725.351
2017-09-29gcardonaManual testing27227432.10
2018-10-14TheJudgerManual testing274276128.4


ECM factoring results:
No ECM results for M89379847


Lucas-Lehmer results:
No L-L results for M89379847


PRP results:
No PRP results for M89379847


CERT results:
No CERT results for M89379847


P-1 factor-bounds graph:
B1 = 725000, B2 = 14318750 (P-1 stage 2)
B1 = 725000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
276
274
272
271
270
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