is 2 4293404021 - 1
has 1292443394 decimal digits
takes 1,162,051.540 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
Actual2710.111454.9296%----0.111454.9296%
Target292233,608.146365.2174%2200000010400000000230,537.66634.3566%464,145.812766.7327%
Difference-21-233,608.0350-10.2878%-22000000-10400000000-230,537.6663-4.3566%-464,145.7013-11.8032%

Known prime factors (6 factors, 327.2 bits, 0.00000762% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4293404021214584332969591444.2872499
3 × 72 × 17
2012-08-2049491.064e-90.01920.0391
429340402168533289949051671652.606798123
3 × 23 × 43 × 269
2019-07-14432691.807e-70.02170.0343
4293404021140803730494142571753.6451639768
23 × 13 × 15767
2019-07-1413157673.380e-70.34200.6295
4293404021219616116614111591754.2862557599
3 × 11 × 17 × 47 × 97
2019-07-1447978.504e-70.01950.0375
429340402119457880820166770091960.755226602024
23 × 3 × 112 × 78031
2020-01-15121780315.826e-51.71343.1164
429340402135506131824410837611961.623413496280
23 × 5 × 641 × 16127
2020-01-15641161270.00010.58270.6439

57 Composite Factors:
P-1 results:
No P-1 results for M4293404021


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-07-1425225352.606164.09239e-8251,4538.68933e-8
2019-07-1425325453.645175.85578e-8251,4531.24335e-7
2019-07-1425425554.286172.91458e-7251,4536.18850e-7
2020-01-15slaurpalvi2-rtx2126460.755190.001236,8530.002
2020-01-15slaurpalvi2-rtx2126461.623190.001236,8530.002
2020-05-04ramgeisr4mg31s2126953.645170.028236,8530.059
2020-05-04ramgeisr4mg31s2126960.755190.028236,8530.059
2020-05-04ramgeisr4mg31s2126944.287140.028236,8530.059
2020-05-04ramgeisr4mg31s2126954.286170.028236,8530.059
2020-05-04ramgeisr4mg31s2126961.623190.028236,8530.059
2020-05-04ramgeisr4mg31s2126952.606160.028236,8530.059
2023-08-11slaurpalvi2-rtx269271--0.084--
Missing TF 71 - 72
Missing TF 72 - 73
Missing TF 73 - 74
Missing TF 74 - 75
2022-02-03ramgeisr4mg31s275276--1.782--
2022-02-06ramgeisr4mg31s276277--3.565--
2022-04-07ramgeisr4mg31s277278--7.129--
2022-04-27ramgeisr4mg31s278279--14.26--


ECM factoring results:
No ECM results for M4293404021


Lucas-Lehmer results:
No L-L results for M4293404021


PRP results:
No PRP results for M4293404021


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
TF factor-bounds graph:
279
278
277
276
271
269
264
255
254
253
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-08-11T14:41:18+00:00