is 2 145813891 - 1
has 43894355 decimal digits
takes 836.152 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual278419.826364.1026%----419.826364.1026%
Target277209.912563.6364%900000272000000130.29594.1333%340.208465.1394%
Difference+1+209.9138+0.4662%-900000-272000000-130.2959-4.1333%+79.6179-1.0368%

Known prime factors (9 factors, 443.4 bits, 0.00030409% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14581389114581389111030.4415
5		2007-10-28159.821e-131.013e-51.692e-5
1458138914537728287931238.7231556
22 × 389		2007-10-2843893.357e-100.00020.0003
14581389119576973005671340.8326713
72 × 137		2007-10-28491371.460e-90.00040.0008
14581389140014247968231341.86413721
13721		2007-10-281137213.958e-90.00620.0116
145813891455277628147131445.372156116
22 × 31 × 1259		2012-03-183112595.758e-80.00080.0011
14581389113581645319136711650.2714657185
32 × 5 × 13 × 19 × 419		2007-10-28194191.079e-60.00030.0004
145813891579280505270948631755.685198636941
5839 × 34019		2015-02-075839340193.321e-50.06130.0988
145813891126268494307394054572063.45343297827608
23 × 7 × 19 × 113 × 131 × 2749		2017-02-2113127490.01310.00230.0023
1458138911277777858260202208287032476.758438153679837061
43 × 89 × 757 × 151241899		2023-05-03757151241899124.9768.521127.97

502 Composite Factors:
P-1 results:
No P-1 results for M145813891


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-03-18AxonManual testing??45.372142.54378e-81,9055.79454e-8
2015-02-07TJAOIManual testing255256*55.685172.92117e-71,9056.65421e-7
2022-05-20LordJuliusManual testing2126350.271161.07874e-61,9052.45729e-6
2022-05-20LordJuliusManual testing2126330.441109.82052e-131,9052.23704e-12
2022-05-20LordJuliusManual testing2126340.832131.45962e-91,9053.32491e-9
2022-05-20LordJuliusManual testing2126341.864133.95769e-91,9059.01534e-9
2022-05-20LordJuliusManual testing2126338.723123.35714e-101,9057.64733e-10
2022-05-20LordJuliusManual testing2126345.372145.75828e-81,9051.31170e-7
2022-05-20LordJuliusManual testing2126355.685173.32087e-51,9057.56470e-5
2017-02-21TJAOIManual testing263264*63.453200.0021,9050.005
2022-11-17LordJuliusManual testing26326463.453200.0021,9050.005
2022-03-27James HeinrichManual testing264266--0.077--
2019-06-16Seth_TrManual testing266267--0.102--
2019-06-18Seth_TrManual testing267268--0.205--
2019-06-19Seth_TrManual testing268269--0.410--
2021-08-06Seth_TrManual testing269270--0.820--
2019-12-07Seth_TrManual testing270271--1.640--
2021-08-06Seth_TrManual testing271272--3.280--
2021-08-06Seth_TrManual testing272273--6.560--
2019-12-10Seth_TrManual testing273274--13.12--
2019-12-21Seth_TrManual testing274275--26.24--
2023-05-03LordJuliusManual testing27527675.8132325.461,80054.79
2023-05-03LordJuliusManual testing27627776.7582420.011,69540.57
2023-05-03LordJuliusManual testing277278--209.9--


ECM factoring results:
No ECM results for M145813891


Lucas-Lehmer results:
No L-L results for M145813891


PRP results:
No PRP results for M145813891


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
278
277
276
275
274
273
272
271
270
269
268
267
266
264
263
256
2
this exponent TF target: 77
TF double-checked to: 67.8
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00