is 2 3893929943 - 1
has 1172189714 decimal digits
takes 976,907.702 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
Actual281125.768460.4938%----125.768460.4938%
Target292257,573.754465.2174%190000008800000000180,946.68204.1480%438,520.436466.6602%
Difference-11-257,447.9860-4.7236%-19000000-8800000000-180,946.6820-4.1480%-438,394.6680-6.1664%

Known prime factors (7 factors, 360.6 bits, 0.00000926% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
38939299431635450576071237.25121
3 × 7		2012-08-20374.937e-120.00120.0022
3893929943617810924756391445.8127933
7933		2019-08-07179332.273e-90.15760.2938
38939299434088003411359131548.53852492
22 × 11 × 1193		2019-08-071111931.908e-80.02740.0443
389392994313396053547106331650.251172012
22 × 43003		2019-08-074430035.980e-80.85371.5918
389392994315551811042149991650.466199693
13 × 15361		2019-08-0713153615.622e-80.30890.5686
389392994349782180992080091652.145639228
22 × 3 × 53269		2019-08-074532693.038e-71.05711.9717
3893929943849512968869161082744972376.16910908169655136
25 × 3 × 13 × 307 × 28470751		2022-03-31307284707514.8286564.381,053.9

120 Composite Factors:
P-1 results:
No P-1 results for M3893929943


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-08-0724524645.812141.06902e-9230,9142.29826e-9
2019-08-0724824948.538159.44633e-9230,9142.03085e-8
2019-08-0725025150.251162.12772e-8230,9144.57434e-8
2019-08-0725025150.466161.77004e-8230,9143.80538e-8
TF systematically completed to 64 but no per-exponent detailed record exists
2019-08-0725225352.145161.49674e-7230,9143.21781e-7
2022-02-04ramgeisr4mg31s275276--1.965--
2022-03-31ramgeisr4mg31s27627776.169233.9301,985,1708.051
2022-04-10ramgeisr4mg31s277278--7.861--
2022-04-10ramgeisr4mg31s278279--15.72--
2022-04-10ramgeisr4mg31s279280--31.44--
2022-04-14ramgeisr4mg31s280281--62.88--


ECM factoring results:
No ECM results for M3893929943


Lucas-Lehmer results:
No L-L results for M3893929943


PRP results:
No PRP results for M3893929943


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
281
280
279
278
277
276
253
251
249
246
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-07-11T14:45:05+00:00