is 2 88784909 - 1
has 26726921 decimal digits
takes 299.320 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
Actual276172.371664.4737 %750000151875007.51153.5848 %179.883065.7472 %
Target27586.184864.0000 %60000010000000029.40654.0504 %115.591365.4581 %
Difference+1+86.1868+0.4737 %+150000-84812500-21.8950-0.4656 %+64.2918+0.2891 %

Known prime factors (1 factor, 78.3 bits, 0.00008820% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
887849093744328313550774107040172478.3092108651321335912
23 × 4057 × 61981 × 1048217
2018-09-29619811048217822.620.56570.6166

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-09-29Patrik Johanssonrho750000151875001222478.3097.5123.947%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-15Architects Cubedm1_432642650.042
2011-03-24wavelet3000Manual testing2652660.084
2011-04-01wavelet3000Manual testing2662670.168
2011-05-12wavelet3000Manual testing2672702.357
2014-03-13ANONYMOUSManual testing2702712.693
2017-08-04ANONYMOUSManual testing27127437.71
2018-09-02TheJudgerManual testing274276129.3


ECM factoring results:
No ECM results for M88784909


Lucas-Lehmer results:
No L-L results for M88784909


PRP results:
No PRP results for M88784909


CERT results:
No CERT results for M88784909


P-1 factor-bounds graph:
B1 = 750000, B2 = 15187500 (P-1 stage 2)
B1 = 750000 (P-1 stage 1)
103
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106
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105
106
107
108
TF factor-bounds graph:
276
274
271
270
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