is 2 99867281 - 1
has 30063048 decimal digits
takes 380.883 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-
PRPCF510778187486FEverified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual278612.978665.3846%725000125062507.55902.8565%620.537666.3734%0.9888%
PrimeNet2729.576062.5000%400000200000008.11755.1983%17.693564.4494%1.9494%
GPU72276153.243364.4737%6500002200000010.02733.8398%163.270665.8378%1.3641%
Difference+2+459.7353+0.9109%+75000-9493750-2.4683-0.9833%+457.2670+0.5356%+0.5356%

Known prime factors:
No known factors for M99867281

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2020-08-14T15:22:10AnthonyRaisWin10Test72500012506250---7.559--2.856%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-10-12T19:28:001997rj7compa264265--0.037--
2012-06-26T19:49:00Jimmy BrüggemannManual testing265266--0.075--
2013-08-16T18:22:00Le ComteManual testing266267--0.150--
2013-08-24T20:39:00processinfoManual testing267268--0.299--
2014-03-19T20:25:00Andreas_TruetschManual testing268269--0.599--
2014-07-24T01:09:00SMoffatManual testing269270--1.197--
2014-08-03T14:53:00SMoffatManual testing270271--2.394--
2017-02-06T10:05:10monstManual testing271272--4.789--
2019-03-19T05:50:22Niels_Mache_NextcloudManual testing272273--9.58--
2019-12-16T22:20:13ixfd64Manual testing273274--19.16--
2020-02-12T19:24:56TheJudgerManual testing274275--38.31--
2020-02-12T19:24:56TheJudgerManual testing275276--76.62--
2020-02-12T19:24:56TheJudgerManual testing276277--153.2--
2020-04-18T06:27:10SRBaseManual testing277278--306.5--


ECM factoring results:
No ECM results for M99867281


Lucas-Lehmer results:
No L-L results for M99867281


PRP results:
dateuseridcompidcofactorsres64PRP
2020-08-31T17:41:39Ben Deloi-0eed4170d2b3b20e1CF510778187486FEno


P-1 factor-bounds graph:
B1 = 725000, B2 = 12506250 (P-1 stage 2)
B1 = 725000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2020-08-31T17:41:39+00:00