is 2 64836433 - 1
has 19517712 decimal digits
takes 157.273 GHz-days to do one PRP test
Last-known PrimeNet details:
Assigned as ll_dc on 2022-03-10, 55.0% done, ETC 2022-07-24
1 primality tests remaining
ResidueStatus
L-LC510AF1EB795D9__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27459.008064.8649%580000116000004.15183.8432%63.159766.2152%1.3503%
PrimeNet2703.685462.8571%280000130000003.42245.2974%7.107864.8248%1.9676%
GPU7227459.008064.8649%450000140000004.17943.8605%63.187366.2213%1.3564%
Difference---+130000-2400000-0.0276-0.0173%-0.0276-0.0061%-0.0061%

Known prime factors:
No known factors for M64836433

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2013-06-30T00:42:00Just factoring!58000011600000---4.152--3.843%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-09-29T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-02-14T00:00:00AxelFoxv4_computers21260--0.002--
2016-02-23T17:19:25Mark RoseManual testing260263--0.022--
2009-03-14T00:55:00David Barleyken2263264--0.030--
2009-10-09T02:30:00Sturle Sundechuchunge.ifi264265--0.058--
2009-12-20T06:35:00sannerud.comJim265266--0.115--
2009-12-20T19:21:00Sturle Sundekiwavi.ifi266267--0.231--
2009-12-22T07:39:00Sebastian HornbostelToshiba-NB267268--0.461--
2009-12-24T20:22:00Sebastian HornbostelToshiba-NB268269--0.922--
2012-02-24T18:09:00RichardUNKNOWN269270--1.844--
2013-05-21T18:12:00TheJudgerManual testing270271--3.688--
2013-05-21T18:12:00TheJudgerManual testing271272--7.376--
2013-05-21T18:12:00TheJudgerManual testing272273--14.75--
2013-06-24T23:42:00Jerry HallettManual testing273274--29.51--


ECM factoring results:
No ECM results for M64836433


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2014-11-28T18:32:00curtisclov4220-06lC510AF1EB795D9__157.3


PRP results:
No PRP results for M64836433


P-1 factor-bounds graph:
B1 = 580000, B2 = 11600000 (P-1 stage 2)
B1 = 580000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-06-27T01:49:02+00:00