is 2 4140255851 - 1
has 1246341201 decimal digits
takes 1,038,705.854 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
Actual27929.571459.4937%----29.571459.4937%
Target292242,249.317765.2174%200000009600000000197,146.23064.2500%439,395.548266.6957%
Difference-13-242,219.7463-5.7237%-20000000-9600000000-197,146.2306-4.2500%-439,365.9768-7.2020%

Known prime factors (6 factors, 313.4 bits, 0.00000757% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
41402558512732568861671237.99133
3 × 11
2012-08-203114.770e-120.00120.0022
414025585124924340223031341.181301
7 × 43
2019-07-127431.215e-100.00330.0052
414025585123751240130197671651.077286833
3 × 23 × 4157
2019-07-122341571.403e-70.09030.1539
414025585173355811091262711652.704885885
3 × 5 × 7 × 11 × 13 × 59
2019-07-1213591.811e-70.00560.0096
4140255851240917645232624452872064.3852909453593
17 × 171144329
2020-11-19171711443290.00133,392.06,335.3
4140255851752923975484422056012066.0299092722800
24 × 3 × 52 × 7 × 1082467
2020-11-192510824670.003621.46340.070

57 Composite Factors:
P-1 results:
No P-1 results for M4140255851


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-07-1224124241.181135.07088e-11243,5451.08140e-10
2019-07-1225125251.077166.77969e-8243,5451.44582e-7
2019-07-1225225352.704163.62273e-8243,5457.72576e-8
TF systematically completed to 64 but no per-exponent detailed record exists
2020-11-19slaurnocebo-165026426864.385200.0002,126,5700.001
2020-11-19slaurnocebo-165026426866.029200.0032,126,5700.006
2022-02-04ramgeisr4mg31s275276--1.848--
2022-02-08ramgeisr4mg31s276277--3.696--
2022-04-04ramgeisr4mg31s277278--7.393--
2022-04-24ramgeisr4mg31s278279--14.79--


ECM factoring results:
No ECM results for M4140255851


Lucas-Lehmer results:
No L-L results for M4140255851


PRP results:
No PRP results for M4140255851


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
279
278
277
276
268
253
252
242
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-07-11T14:45:05+00:00