is 2 85393909 - 1
has 25706129 decimal digits
takes 275.040 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276179.216564.4737%685000133575006.42363.4359%185.640065.6943%1.2206%
PrimeNet2715.598561.9718%360000170000005.91535.3841%11.513864.0193%2.0475%
GPU7227589.607264.0000%550000190000007.26313.9464%96.870365.4207%1.4207%
Difference+1+89.6093+0.4737%+135000-5642500-0.8396-0.5105%+88.7697+0.2736%+0.2736%

Known prime factors:
No known factors for M85393909

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-01-18T08:15:04arnaudGTI06685000133575006---6.424--3.436%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2019-04-28T10:39:01ATHManual testing21263--0.019--
2019-04-28T10:39:01ATHManual testing263264--0.023--
2010-11-27T20:20:00Architects Cubedm1_17264265--0.044--
2013-03-05T23:40:00E.Lechner265266--0.088--
2013-03-17T15:08:00BumblebeeWookie266267--0.175--
2013-03-23T08:22:00ANONYMOUS267268--0.350--
2013-03-27T11:56:00S36049Wolle5268269--0.700--
2013-04-10T09:36:00ANONYMOUS269270--1.400--
2013-07-22T07:28:00g0bManual testing270271--2.800--
2014-01-22T17:37:00natha(net)Manual testing271272--5.601--
2017-03-08T15:29:53Matthias WurtingerManual testing272273--11.20--
2017-04-16T15:41:42ANONYMOUSManual testing273274--22.40--
2017-09-16T10:59:03ANONYMOUSManual testing274275--44.80--
2017-09-24T15:22:05TheJudgerManual testing275276--89.61--


ECM factoring results:
No ECM results for M85393909


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2019-05-29T05:17:50Roland Clarksoni9-7980xe0A238A21D6846CB__275.0


PRP results:
No PRP results for M85393909


P-1 factor-bounds graph:
B1 = 685000, B2 = 13357500 (P-1 stage 2)
B1 = 685000 (P-1 stage 1)
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108
TF factor-bounds graph:
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Last modified: 2019-05-29T05:17:50+00:00