is 2 242000023 - 1
has 72849266 decimal digits
takes 2,544.361 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
Actual279505.922264.5570 %2075000207500031.63371.8785 %537.555965.2228 %
Target279505.922264.5570 %1500000300000000270.80104.2992 %776.723266.0807 %
Difference---+575000-297925000-239.1673-2.4207 %-239.1673-0.8580 %

Known prime factors (1 factor, 83.4 bits, 0.00003447% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
242000023130005571663604846381840412683.42726860652749525740
22 × 3 × 5 × 29 × 31 × 37 × 32587 × 413009
2019-10-11325874130098,094.80.81281.0111

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-10-11KrieselManual testing20750002075000212683.42732.761.879%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2009-06-22rudimeierbonnie2672680.124
2009-07-02rudimeierhomer2682690.247
2009-07-22rudimeierbart2692700.494
2009-08-20rudimeierbart2702710.988
2009-11-19rudimeierdickie2712721.976
2010-01-07rudimeierhomer2722733.953
2010-04-19rudimeierbonnie2732747.905
2010-05-18rudimeierbooka27427515.81
2019-10-08KrieselManual testing27527631.62
2019-10-08KrieselManual testing27627763.24
2019-10-08KrieselManual testing277278126.5
2019-10-08KrieselManual testing278279253.0


ECM factoring results:
No ECM results for M242000023


Lucas-Lehmer results:
No L-L results for M242000023


PRP results:
No PRP results for M242000023


CERT results:
No CERT results for M242000023


P-1 factor-bounds graph:
B1 = 2075000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
279
278
277
276
275
274
273
272
271
270
269
268
this exponent TF target: 79
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00