is 2 2390611 - 1
has 719646 decimal digits
takes 0.161 GHz-days to do one PRP test
Last-known PrimeNet details:
Assigned as ecm on 2022-05-02, 0.0% done, ETC 2022-05-05
0 primality tests remaining
ResidueStatus
L-L7AF28E5EF816911Cdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26949.939968.1159%30000001000000000.81157.2263%50.751470.4200%2.3041%
PrimeNet2590.032162.7119%100001700000.00182.4778%0.034063.6358%0.9239%
GPU722630.667665.0794%100001400000.00171.2738%0.669365.5242%0.4448%
Difference+6+49.2722+3.0366%+2990000+99860000+0.8099+5.9525%+50.0821+4.8958%+4.8958%

Known prime factors:
No known factors for M2390611

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.187%
2010-11-08T11:36:00Jocelyn LaroucheManual testing1500015000---0.001--0.169%
2010-11-15T22:51:00Jocelyn LaroucheManual testing2000020000---0.002--0.219%
2010-12-25T02:47:00markrtiny1000002075000---0.020--2.151%
2014-09-15T22:12:00ANONYMOUSManual testing126848126848---0.012--0.814%
2015-11-22T07:56:28mikrMSI300000010000000012---0.812--7.226%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-29T00:00:00ANONYMOUSv4_computers21258--0.016--
1999-03-15T00:00:00ANONYMOUSv4_computers21259--0.032--
2016-02-23T16:29:13Mark RoseManual testing259260--0.032--
2009-01-16T02:31:00Sturle Sundeantonov.ifi260261--0.064--
2012-06-01T20:18:00Sebastian HornbostelManual testing261262--0.128--
2013-01-23T08:27:00dbaughManual testing262263--0.411--
2015-03-10T10:44:00VictordeHollanderManual testing263264--0.821--
2015-03-10T10:44:00VictordeHollanderManual testing264265--1.563--
2015-11-02T09:33:38ramgeisManual testing265266--3.126--
2017-06-23T15:59:17Gordon SpenceManual testing266267--6.252--
2019-03-11T11:16:31TJAOIManual testing267268--12.50--
2021-06-17T12:14:45TJAOIManual testing268269--25.01--


ECM factoring results:

Old Calculation Method

Total ECM effort:14.941 GHz-days
Estimated T-Level:22.911
DigitsB1CurvesCompleteFacMiss
2011000166 / 1001.66018.856%
2550000163 / 2800.58255.812%

New Calculation Method

Total ECM effort:14.941 GHz-days
Estimated T-Level:22.911
DigitsB1CompleteFacMiss
20110006.3980.167%
25500000.59155.366%
302500000.03796.337%
3510000000.00299.826%


ECM Summary

B1B2factorcurvesGHz-days
5000050000030.166
50000500000014212.63
500006750000212.142


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-06-29T00:00:00ANONYMOUSv4_computers7AF28E5EF816911C0.161
1999-04-13T00:00:00ANONYMOUSv4_computers7AF28E5EF816911C0.161
2018-05-16T18:50:21kkmrkkblmbrbkold7AF28E5EF816911C0.161


PRP results:
No PRP results for M2390611


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 100000, B2 = 2075000 (P-1 stage 2)
B1 = 126848 (P-1 stage 1)
B1 = 100000 (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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TF factor-bounds graph:
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Last modified: 2022-06-25T15:26:02+00:00