is 2 87422903 - 1
has 26316917 decimal digits
takes 294.729 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
Actual276175.057064.4737 %715000141212507.06573.5043 %182.122765.7187 %
Target27587.527564.0000 %55000010000000029.17543.9962 %116.702965.4386 %
Difference+1+87.5295+0.4737 %+165000-85878750-22.1097-0.4919 %+65.4199+0.2800 %

Known prime factors (1 factor, 81.5 bits, 0.00009317% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
8742290333070036207321684099007512581.45218913828683612625
53 × 7 × 232 × 47 × 61 × 14252401
2018-05-13529142524017,087.23.79837.0896

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-05-13TheJudgerManual testing715000141212501222581.4527.5923.861%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-11-15Architects Cubedm1_362642650.043
2013-03-04DolkManual testing2652660.085
2013-03-06S00030vd032662670.171
2013-08-22SMoffatManual testing2672691.026
2013-08-26SMoffatManual testing2692701.368
2013-11-13Ryan PropperManual testing2702712.735
2017-05-26Strolling JellyfishManual testing27127438.29
2018-04-01Strolling JellyfishManual testing274276131.3


ECM factoring results:
No ECM results for M87422903


Lucas-Lehmer results:
No L-L results for M87422903


PRP results:
No PRP results for M87422903


CERT results:
No CERT results for M87422903


P-1 factor-bounds graph:
B1 = 715000, B2 = 14121250 (P-1 stage 2)
B1 = 715000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00