is 2 4082436857 - 1
has 1228935950 decimal digits
takes 1,024,200.247 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
Actual27929.990259.4937%----29.990259.4937%
Target292245,680.261665.2174%200000006000000000125,796.06394.2443%371,476.325566.6937%
Difference-13-245,650.2713-5.7237%-20000000-6000000000-125,796.0639-4.2443%-371,446.3352-7.2000%

Known prime factors (6 factors, 273.8 bits, 0.00000671% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4082436857244946211431134.5123
3
2012-08-20135.646e-130.00040.0007
40824368576450250234071239.23179
79
2014-08-281792.131e-110.00190.0029
4082436857185179335833531444.0742268
22 × 34 × 7
2014-08-2881818.037e-100.02950.0600
4082436857266501478024971444.5993264
26 × 3 × 17
2014-08-2864641.017e-90.02330.0474
4082436857530063601512891445.5916492
22 × 3 × 541
2014-08-2845411.673e-90.01210.0200
4082436857631036440840232246812065.7747728673620
22 × 3 × 5 × 17 × 257 × 29483
2014-08-28257294830.00340.67271.0913

57 Composite Factors:
P-1 results:
No P-1 results for M4082436857


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2020-10-22slaurnocebo-165026426865.774200.0022,097,0900.005
2023-07-21LordJuliusRTX3060268273--0.454--
2022-01-29ramgeisr4mg31s27327434.512110.4692,081,73030.70
2022-01-29ramgeisr4mg31s27327439.231120.4692,081,7300.959
2023-07-21LordJuliusRTX3060274275--0.937--
2022-02-04ramgeisr4mg31s275276--1.874--
2022-02-08ramgeisr4mg31s276277--3.749--
2022-04-07ramgeisr4mg31s277278--7.498--
2022-04-23ramgeisr4mg31s27827944.0741415.002,081,73030.70
2022-04-23ramgeisr4mg31s27827934.5121115.002,081,73030.70


ECM factoring results:
No ECM results for M4082436857


Lucas-Lehmer results:
No L-L results for M4082436857


PRP results:
No PRP results for M4082436857


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
TF factor-bounds graph:
279
278
277
276
275
274
273
268
this exponent TF target: 92
250
260
270
280
290
2100
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Last modified: 2023-10-02T12:12:48+00:00