is 2 2403053 - 1
has 723392 decimal digits
takes 0.162 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L8B98ABB815617228double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27099.436368.5714%3102822434395080.51925.7703%99.955570.3849%1.8135%
PrimeNet2590.032062.7119%100001700000.00182.4802%0.033863.6367%0.9248%
GPU722630.664265.0794%100001400000.00171.2752%0.665865.5247%0.4453%
Difference+7+98.7721+3.4921%+3092822+43299508+0.5175+4.4951%+99.2896+4.8603%+4.8603%

Known prime factors (1 factor, 72.6 bits, 0.00302284% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
240305373609791538705706193672272.6401531589014863711
32 × 43 × 72019 × 54952087
2020-07-147201954952087407.530.29990.5478

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.150%
2010-11-08T22:12:00Jocelyn LaroucheManual testing1500015000---0.001--0.140%
2010-11-16T23:08:00Jocelyn LaroucheManual testing2000020000---0.002--0.183%
2010-12-22T22:53:00markrtiny950001923750---0.019--1.849%
2014-02-19T05:39:00mikrMSI310282243439508---0.519--5.770%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:13Mark RoseManual testing21260--0.064--
2009-01-16T02:30:00Sturle Sundegibus.ifi260261--0.064--
2012-06-03T10:42:00Sebastian HornbostelManual testing261262--0.128--
2013-12-04T21:14:00Jerry HallettManual testing262263--0.409--
2015-02-27T20:40:00VictordeHollanderManual testing263264--0.817--
2015-02-27T20:40:00VictordeHollanderManual testing264265--1.555--
2015-10-21T10:28:04ramgeisManual testing265266--3.110--
2017-06-29T16:14:23Gordon SpenceManual testing266267--6.219--
2019-01-25T12:45:36Anton RepkoManual testing267269--37.32--
2019-02-04T05:43:01YxinityManual testing269270--49.75--


ECM factoring results:

Old Calculation Method

Total ECM effort:5.609 GHz-days
Estimated T-Level:3.150
DigitsB1CurvesCompleteFacMiss
201100063 / 1000.63053.091%
255000063 / 2800.22579.819%

New Calculation Method

Total ECM effort:5.609 GHz-days
Estimated T-Level:3.150
DigitsB1CompleteFacMiss
20110002.03213.104%
25500000.18483.221%
302500000.01198.875%


ECM Summary

B1B2factorcurvesGHz-days
500005000000625.520
50000500000010.089


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00ANONYMOUSv4_computers8B98ABB8156172280.162
2018-05-18T09:32:45kkmrkkblmbrbkold8B98ABB8156172280.162


PRP results:
dateuseridcompidcofactorsres64PRP
2020-07-17T11:01:21kotenok2000shodan1
7360979153870570619367
B06FE84DC2953D34no
2020-07-17T11:49:17LaurV3tits
7360979153870570619367
B06FE84DC2953D34no


P-1 factor-bounds graph:
B1 = 3102822, B2 = 43439508 (P-1 stage 2)
B1 = 3102822 (P-1 stage 1)
B1 = 95000, B2 = 1923750 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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108
TF factor-bounds graph:
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267
266
265
264
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261
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270
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2100
Last modified: 2020-07-17T11:49:17+00:00