is 2 831199679 - 1
has 250216036 decimal digits
takes 36,141.793 GHz-days to do one PRP test
Last-known PrimeNet details:
Assigned as prp on 2022-11-13, 0.0% done, ETC 2024-05-07
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual28875,416.155865.9091%----75,416.155865.9091%
Target2844,713.509564.2857%450000017600000006,313.92424.4985%11,027.433765.8923%
Difference+4+70,702.6463+1.6234%-4500000-1760000000-6,313.9242-4.4985%+64,388.7221+0.0168%

Known prime factors:
No known factors for M831199679

P-1 results:
No P-1 results for M831199679


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2017-10-09Yuki ItoManual testing21249--9.02253e-8--
2010-04-08Architects CubedManual testing263264--0.002--
2017-10-09Yuki ItoManual testing250264--0.004--
2010-10-10Architects Cubedm1_61264265--0.004--
2013-10-12america64Manual testing265266--0.009--
2015-02-04sasakihome266267--0.018--
2015-07-29sasakiManual testing267268--0.036--
2017-01-31ramgeisManual testing268270--0.216--
2017-10-09Yuki ItoManual testing21270--0.287--
2017-10-08Yuki ItoManual testing270271--0.288--
2017-10-08Yuki ItoManual testing271272--0.575--
2017-10-08Yuki ItoManual testing272273--1.151--
2017-10-08Yuki ItoManual testing273274--2.302--
2017-10-08Yuki ItoManual testing274275--4.603--
2017-10-08Yuki ItoManual testing275276--9.206--
2017-10-08Yuki ItoManual testing276277--18.41--
2017-10-08Yuki ItoManual testing277278--36.82--
2017-10-08Yuki ItoManual testing278279--73.65--
2017-10-09Yuki ItoManual testing279280--147.3--
2017-10-14Yuki ItoManual testing280281--294.6--
2017-10-21Yuki ItoManual testing281282--589.2--
2017-10-23Yuki ItoManual testing282283--1,178--
2018-04-10Yuki ItoManual testing283284--2,357--
2018-04-17Yuki ItoManual testing284285--4,714--
2020-07-09Yuki ItoManual testing285286--9,427--
2021-12-09Yuki ItoManual testing286287--18,854--
2022-12-01Yuki Ito w/ RTX4090 insideManual testing287288--37,708--


ECM factoring results:
No ECM results for M831199679


Lucas-Lehmer results:
No L-L results for M831199679


PRP results:
No PRP results for M831199679


TF factor-bounds graph:
288
287
286
285
284
283
282
281
280
279
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275
274
273
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271
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this exponent TF target: 84
TF double-checked to: 67.9
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Last modified: 2023-07-07T13:16:03+00:00