is 2 72290189 - 1
has 21761516 decimal digits
takes 193.276 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
Actual275105.849964.0000 %6200006200002.40361.4944 %108.253564.5380 %
Target27452.923763.5135 %5000008500000019.78614.1196 %72.709865.0166 %
Difference+1+52.9262+0.4865 %+120000-84380000-17.3825-2.6252 %+35.5437-0.4786 %

Known prime factors (1 factor, 83.1 bits, 0.00011497% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
72290189104456639589916084748254732683.11172248143928573824
27 × 17 × 29 × 71 × 42071 × 383291
2015-03-154207138329132,4010.23520.3319

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-03-15TheJudgerManual testing62000062000012683.1112.5351.679%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-19Wojciech FlorekManual testing212640.026
2010-05-17David Barleyken22642650.052
2010-05-19S00030vd032652660.103
2010-05-20S00030vd032662670.207
2010-05-22GrunwalderGIMPvangelis2672680.413
2010-05-29J. Honessjhoness2682690.827
2012-10-30ANONYMOUS2692701.654
2013-04-14SMoffatManual testing2702713.308
2015-03-01Craig MeyersManual testing27127599.24


ECM factoring results:
No ECM results for M72290189


Lucas-Lehmer results:
No L-L results for M72290189


PRP results:
No PRP results for M72290189


CERT results:
No CERT results for M72290189


P-1 factor-bounds graph:
B1 = 620000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
271
270
269
268
267
266
265
264
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00