is 2 104819287 - 1
has 31553750 decimal digits
takes 417.348 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-
PRPB45F6A6635A4D7__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276146.003664.4737%8700001783500010.35913.8458%156.362765.8400%1.3663%
PrimeNet2729.123662.5000%450000220000009.37655.3948%18.500164.5231%2.0231%
GPU72276146.003664.4737%6500002400000011.09733.9262%157.100965.8685%1.3948%
Difference---+220000-6165000-0.7382-0.0804%-0.7382-0.0286%-0.0286%

Known prime factors:
No known factors for M104819287

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-07-09T23:05:11tottenhoff2011pc870000178350006---10.36--3.846%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-19T09:53:00sasaki3MATE_J263264--0.019--
2010-08-29T01:43:00Donna NobleHTPC-V64264265--0.036--
2012-05-12T02:14:00RichardUNKNOWN265266--0.071--
2013-09-09T21:36:00willmoreManual testing266267--0.143--
2013-09-12T15:41:00Cow_tippingManual testing267268--0.285--
2013-09-15T16:47:00ANONYMOUSManual testing268269--0.570--
2013-09-21T06:27:00Kelly Lowder269270--1.141--
2014-05-16T21:36:00Andreas_TruetschManual testing270271--2.281--
2014-12-28T08:16:00shaugeManual testing271272--4.563--
2019-12-17T00:00:11storm5510Manual testing272273--9.125--
2020-04-01T14:37:37SRBaseManual testing273274--18.25--
2021-03-28T20:33:34TheJudgerManual testing274275--36.50--
2021-03-28T20:33:34TheJudgerManual testing275276--73.00--


ECM factoring results:
No ECM results for M104819287


Lucas-Lehmer results:
No L-L results for M104819287


PRP results:
dateuseridcompidcofactorsres64PRP
2021-07-11T23:29:26Ben Deloi-03d158ab5783e5818B45F6A6635A4D7__no


P-1 factor-bounds graph:
B1 = 870000, B2 = 17835000 (P-1 stage 2)
B1 = 870000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-07-11T23:29:26+00:00