is 2 89681929 - 1
has 26996951 decimal digits
takes 302.344 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
Actual276170.647564.4737 %8500008500004.15511.5781 %174.802665.0343 %
Target27585.322764.0000 %60000010000000029.40654.0554 %114.729265.4599 %
Difference+1+85.3247+0.4737 %+250000-99150000-25.2513-2.4773 %+60.0734-0.4256 %

Known prime factors (1 factor, 88.9 bits, 0.00009907% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
896819295587165880252214302548476232788.8523114989799256110059
17 × 41 × 26267 × 213091 × 798451
2018-12-21213091798451916,6931.19762.1200

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-12-21KingFactorFinder85000085000012788.8524.1551.767%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-11Architects Cubedm1_292642650.042
2013-03-23g0bManual testing2652660.083
2013-03-24SWL551Manual testing2662702.500
2013-08-18SMoffatManual testing2702712.666
2017-09-28lemonlurkerManual testing27127316.00
2017-10-17Tim SorberaManual testing27327421.33
2018-11-04TheJudgerManual testing274276128.0


ECM factoring results:
No ECM results for M89681929


Lucas-Lehmer results:
No L-L results for M89681929


PRP results:
No PRP results for M89681929


CERT results:
No CERT results for M89681929


P-1 factor-bounds graph:
B1 = 850000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
276
274
273
271
270
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00