is 2 88240309 - 1
has 26562980 decimal digits
takes 297.484 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
Actual276173.435464.4737 %725000141375007.11633.5153 %180.551765.7225 %
Target27586.716764.0000 %60000010000000029.40654.0474 %116.123265.4570 %
Difference+1+86.7187+0.4737 %+125000-85862500-22.2902-0.5321 %+64.4285+0.2655 %

Known prime factors (1 factor, 76.9 bits, 0.00008714% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
882403091398491098315677832337112476.888792433250837595
32 × 5 × 31 × 41981 × 13531181
2018-10-084198113531181198.783.79786.7309

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-10-08Oliver KruseManual testing725000141375001222476.8887.6463.872%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-13Architects Cubedm1_652642650.042
2011-03-16wavelet3000Manual testing2652660.085
2011-04-16wavelet3000Manual testing2662670.169
2011-09-05wavelet3000Manual testing2672702.371
2015-08-14monstManual testing2702712.710
2017-07-02Sid & AndyManual testing27127316.26
2017-07-13Tim SorberaManual testing27327421.68
2018-07-09penluManual testing274276130.1


ECM factoring results:
No ECM results for M88240309


Lucas-Lehmer results:
No L-L results for M88240309


PRP results:
No PRP results for M88240309


CERT results:
No CERT results for M88240309


P-1 factor-bounds graph:
B1 = 725000, B2 = 14137500 (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
273
271
270
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
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280
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Last modified: 2024-03-13T02:15:48+00:00