is 2 147358543 - 1
has 44359342 decimal digits
takes 845.009 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
Actual27312.980961.6438 %----12.980961.6438 %
Target277207.712263.6364 %90000017000000084.08834.1384 %291.800565.1412 %
Difference-4-194.7313-1.9925 %-900000-170000000-84.0883-4.1384 %-278.8196-3.4974 %

Known prime factors (1 factor, 72.6 bits, 0.00004927% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14735854371994858086873826440412272.60824428464282140
22 × 3 × 5 × 407141071369		2020-05-1554071410713699.1874184,441344,485

P-1 results:
No P-1 results for M147358543


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-02Aliali-pone2642650.025
2012-12-31Charles A. Morrischandra2652660.051
2015-03-08Jason UDell-Win72662670.101
2016-03-20DerekManual testing2672680.203
2016-12-05nate.andersManual testing2682690.406
2016-12-08nate.andersManual testing2692700.811
2016-12-10airbreatherManual testing2702711.623
2016-12-14ConductorManual testing2712723.246
2020-05-15ViliamFManual testing272273
72.608
22
3.949


ECM factoring results:
No ECM results for M147358543


Lucas-Lehmer results:
No L-L results for M147358543


PRP results:
No PRP results for M147358543


CERT results:
No CERT results for M147358543


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
this exponent TF target: 77
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-04-17T15:19:26+00:00