is 2 396507047 - 1
has 119360515 decimal digits
takes 7,551.991 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
Actual2811,235.118864.1975 %3125000312500086.30351.9046 %1,321.422364.8794 %
Target2811,235.118864.1975 %2400000500000000814.99864.3899 %2,050.117465.7692 %
Difference---+725000-496875000-728.6951-2.4853 %-728.6951-0.8898 %

Known prime factors (1 factor, 93.0 bits, 0.00002345% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
39650704797845612991184806148292673612892.98312338445650776139440
24 × 5 × 7 × 13 × 257 × 787 × 4157 × 2015771
2016-03-13415720157712,529,5243.14165.6649

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2016-03-13america64Manual testing3125000312500012892.98395.531.905%


Trial Factoring results:
57585960616263646566676869707172737475767778798081
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-05-06Architects Cubedm1_532642650.009
2014-06-01tschpxw6600-322652660.019
2016-01-30laleraManual testing2662690.264
2016-01-30laleraManual testing2692700.302
2016-01-30laleraManual testing2702710.603
2016-01-31laleraManual testing2712721.206
2016-01-31laleraManual testing2722732.412
2016-02-03laleraManual testing2732744.825
2016-02-04laleraManual testing2742759.65
2016-02-04laleraManual testing27527619.30
2016-02-04laleraManual testing27627738.60
2016-02-06laleraManual testing27727877.20
2016-02-15laleraManual testing278279154.4
2016-02-17laleraManual testing279280308.8
2016-03-04america64Manual testing280281617.6


ECM factoring results:
No ECM results for M396507047


Lucas-Lehmer results:
No L-L results for M396507047


PRP results:
No PRP results for M396507047


CERT results:
No CERT results for M396507047


P-1 factor-bounds graph:
B1 = 3125000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
TF factor-bounds graph:
281
280
279
278
277
276
275
274
273
272
271
270
269
266
265
this exponent TF target: 81
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00