is 2 3989418661 - 1
has 1200934683 decimal digits
takes 1,000,863.876 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
Actual2690.029953.6232%----0.029953.6232%
Target292251,408.598665.2174%200000009600000000197,146.23064.2349%448,554.829266.6904%
Difference-23-251,408.5687-11.5942%-20000000-9600000000-197,146.2306-4.2349%-448,554.7992-13.0672%

Known prime factors (7 factors, 345.5 bits, 0.00000866% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3989418661638306985771135.8948
23		2012-08-20881.169e-120.00290.0059
3989418661877672105431136.35311
11		2012-08-201112.355e-120.00060.0007
398941866119069421199591340.794239
239		2019-08-0812395.761e-110.00510.0089
398941866145958102974731342.063576
26 × 32		2019-08-08992.014e-100.00330.0067
398941866111102951075429111649.980139155
3 × 5 × 9277		2019-08-08592772.484e-80.18560.3435
39894186611094388309157210000812166.56913716137640
23 × 3 × 5 × 853 × 133999		2020-11-198531339990.00582.94924.9603
3989418661164620078999943926217772373.8022063208865608
23 × 32 × 11 × 2621 × 993919		2021-10-2526219939190.945320.60036.792

120 Composite Factors:
P-1 results:
No P-1 results for M3989418661


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-08-0824024140.794132.08931e-112,035,06015.72
2019-08-0824224342.063135.45493e-112,035,06031.44
2019-08-0824925049.980166.04238e-92,050,7705.08991e-8
2021-03-23slaurnocebo-165026426866.569210.0142,035,0600.059
2020-11-19ramgeisr4mg31s2126966.569210.0062,035,0600.059
2020-11-19ramgeisr4mg31s2126949.980162.48409e-82,050,7705.08991e-8
2020-11-19ramgeisr4mg31s2126940.794135.76090e-112,035,06015.72
2020-11-19ramgeisr4mg31s2126942.063132.01413e-102,035,06031.44
2020-11-19ramgeisr4mg31s2126935.894111.16923e-122,035,06015.72
2020-11-19ramgeisr4mg31s2126936.353112.35484e-122,035,06031.44
2021-09-22Seth_Tr108026426966.569210.0292,035,0600.059
Missing TF 69 - 70
Missing TF 70 - 71
Missing TF 71 - 72
Missing TF 72 - 73
2021-10-25Seth_Tr108027327473.802230.4802,035,0600.983
Missing TF 74 - 75
2022-01-18ramgeisr4mg31s275276--1.918--
2022-01-19ramgeisr4mg31s27627740.794133.8362,035,06015.72
2022-01-19ramgeisr4mg31s27627735.894113.8362,035,06015.72
2022-01-21ramgeisr4mg31s27727840.794137.6722,035,06015.72
2022-01-21ramgeisr4mg31s27727842.063137.6722,035,06031.44
2022-01-21ramgeisr4mg31s27727835.894117.6722,035,06015.72
2022-01-21ramgeisr4mg31s27727836.353117.6722,035,06031.44
2022-01-29ramgeisr4mg31s27827942.0631315.342,035,06031.44
2022-01-29ramgeisr4mg31s27827936.3531115.342,035,06031.44
2022-02-02ramgeisr4mg31s279280--30.69--
2022-04-14ramgeisr4mg31s280281--61.38--


ECM factoring results:
No ECM results for M3989418661


Lucas-Lehmer results:
No L-L results for M3989418661


PRP results:
No PRP results for M3989418661


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
TF factor-bounds graph:
281
280
279
278
277
276
274
269
268
250
243
241
this exponent TF target: 92
250
260
270
280
290
2100
Last modified: 2023-07-11T14:45:05+00:00