is 2 4289395763 - 1
has 1291236788 decimal digits
takes 1,160,966.666 GHz-days to do one PRP test
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27928.543259.4937%----28.543259.4937%
Target292233,826.443265.2174%2200000010400000000230,537.66634.3562%464,364.109566.7326%
Difference-13-233,797.9000-5.7237%-22000000-10400000000-230,537.6663-4.3562%-464,335.5663-7.2389%

Known prime factors (6 factors, 267.8 bits, 0.00000624% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
428939576385787915271032.9981
1
2012-08-20111.337e-130.00040.0008
42893957633860456186711238.49045
32 × 5
2019-07-14999.452e-120.00350.0072
428939576310380337746471339.917121
112
2019-07-141211212.199e-110.04750.0966
428939576335773560663431341.702417
3 × 139
2019-07-1431391.361e-100.00410.0056
42893957632736291345132971547.95931896
23 × 32 × 443
2019-07-1494438.492e-90.01280.0176
42893957631269818577052839846472166.78314801835121
71 × 1259 × 165589
2021-01-3112591655890.00544.00786.6128

57 Composite Factors:
P-1 results:
No P-1 results for M4289395763


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-07-1423823938.490129.14683e-132,360,77029.20
2019-07-1423924039.917134.91896e-122,360,77029.20
2019-07-1424124241.702136.78085e-112,360,7701.825
2019-07-1424724847.959154.12120e-9251,2468.75143e-9
2021-01-31slaurnocebo-165026426866.783210.0132,360,7700.027
Missing TF 68 - 69
Missing TF 69 - 70
Missing TF 70 - 71
2022-01-27ramgeisr4mg31s27127238.490120.1112,360,77029.20
2022-01-27ramgeisr4mg31s27127232.998100.1112,360,7701.825
2022-01-29ramgeisr4mg31s27227339.917130.2232,360,77029.20
2022-01-29ramgeisr4mg31s27227332.998100.2232,360,7701.825
Missing TF 73 - 74
2022-01-30ramgeisr4mg31s27427541.702130.8922,360,7701.825
2022-01-30ramgeisr4mg31s27427532.998100.8922,360,7701.825
2022-02-03ramgeisr4mg31s275276--1.784--
2022-02-06ramgeisr4mg31s276277--3.568--
2022-04-07ramgeisr4mg31s277278--7.136--
2022-04-27ramgeisr4mg31s27827939.9171314.272,360,77029.20
2022-04-27ramgeisr4mg31s27827938.4901214.272,360,77029.20


ECM factoring results:
No ECM results for M4289395763


Lucas-Lehmer results:
No L-L results for M4289395763


PRP results:
No PRP results for M4289395763


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
TF factor-bounds graph:
279
278
277
276
275
273
272
268
248
242
240
239
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-07-11T14:45:05+00:00