is 2 99467887 - 1
has 29942818 decimal digits
takes 379.359 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
Actual277307.719164.9351 %775000151125008.60573.3089 %316.324866.0953 %
Target276153.858664.4737 %65000011000000036.54143.8379 %190.400165.8372 %
Difference+1+153.8604+0.4614 %+125000-94887500-27.9357-0.5291 %+125.9247+0.2582 %

Known prime factors (1 factor, 98.8 bits, 0.00009937% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
994678875685960097327306369092375391373098.8432858188843062136410464
25 × 11 × 19 × 43 × 12517 × 106781 × 7435873
2020-06-301067817435873928,056,6182.79874.1845

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-06-30Ryan PropperManual testing77500015112500623098.8439.903.646%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-12-131997rj7compw2642650.038
2012-11-10Jimmy BrüggemannManual testing2652660.075
2014-04-24Carsten KossendeyManual testing2662680.451
2014-04-26PascalBieriManual testing2682690.601
2014-04-29PascalBieriManual testing2692701.202
2014-05-03PascalBieriManual testing2702712.404
2017-01-25monstManual testing2712724.808
2019-04-09Niels_Mache_NextcloudManual testing2722739.62
2019-12-04Dylan DelgadoManual testing27327419.23
2020-05-11TheJudgerManual testing274277269.3


ECM factoring results:
No ECM results for M99467887


Lucas-Lehmer results:
No L-L results for M99467887


PRP results:
No PRP results for M99467887


CERT results:
No CERT results for M99467887


P-1 factor-bounds graph:
B1 = 775000, B2 = 15112500 (P-1 stage 2)
B1 = 775000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
277
274
273
272
271
270
269
268
266
265
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00