is 2 87297151 - 1
has 26279061 decimal digits
takes 294.305 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L8FD932B2BFC85D__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276175.309264.4737 %710000140225007.01633.4956 %182.325565.7155 %
Target27587.653664.0000 %55000010000000029.17543.9955 %116.829065.4384 %
Difference+1+87.6556+0.4737 %+160000-85977500-22.1591-0.4999 %+65.4965+0.2772 %

Known prime factors:
No known factors for M87297151

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-04-28jackwingg-0077100001402250012--6.7033.851%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-17Architects Cubedm1_182642650.043
2013-03-04SMoffatManual testing2652660.086
2013-09-05ManpowreManual testing2662670.171
2014-03-25ANONYMOUS2672680.342
2014-05-26GrunwalderGIMPcompute-0-52682690.685
2014-05-27GrunwalderGIMPcompute-0-52692701.370
2015-08-08monstManual testing2702712.739
2017-05-16Strolling JellyfishManual testing27127316.44
2017-06-12ANONYMOUSManual testing27327421.91
2018-03-30Brian BeuningManual testing27427543.83
2018-04-03TheJudgerManual testing27527687.66


ECM factoring results:
No ECM results for M87297151


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2019-11-09AxelFoxServer-UCS8FD932B2BFC85D__281.2


PRP results:
No PRP results for M87297151


CERT results:
No CERT results for M87297151


P-1 factor-bounds graph:
B1 = 710000, B2 = 14022500 (P-1 stage 2)
B1 = 710000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
275
274
273
271
270
269
268
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