is 2 87709387 - 1
has 26403157 decimal digits
takes 295.694 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
Actual276174.485264.4737 %7150007150003.49521.4588 %177.980464.9919 %
Target27587.241664.0000 %60000010000000029.40654.0444 %116.648165.4560 %
Difference+1+87.2436+0.4737 %+115000-99285000-25.9113-2.5856 %+61.3324-0.4640 %

Known prime factors (1 factor, 79.8 bits, 0.00009104% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8770938710879838472459002991022632579.8486202208705699313
33 × 199 × 1213 × 7951 × 119687
2018-05-1679511196871,442.10.06860.0791

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-05-16RuzovejManual testing71500071500012579.8483.7551.637%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-19Architects Cubedm1_522642650.043
2013-03-07saffaManual testing2652660.085
2013-03-09Brian V.Manual testing2662670.170
2013-03-11SMoffatManual testing2672680.341
2013-03-15Charles A. Morrischandra2682690.682
2013-03-18g0bManual testing2692701.363
2013-11-16timc995dl580_g5b2702712.726
2017-07-14Travis Glenn RussoManual testing27127581.79
2018-05-06TheJudgerManual testing27527687.24


ECM factoring results:
No ECM results for M87709387


Lucas-Lehmer results:
No L-L results for M87709387


PRP results:
No PRP results for M87709387


CERT results:
No CERT results for M87709387


P-1 factor-bounds graph:
B1 = 715000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
276
275
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00