is 2 3360061 - 1
has 1011480 decimal digits
takes 0.353 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LE6371282D51AC6CEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26935.531168.1159%40000001500000001.82068.1368%37.351770.7103%2.5943%
PrimeNet2600.045763.3333%140002800000.00432.8412%0.050064.3751%1.0418%
GPU722641.059365.6250%180003000000.00511.7564%1.064466.2288%0.6038%
Difference+5+34.4718+2.4909%+3982000+149700000+1.8155+6.3804%+36.2873+4.4815%+4.4815%

Known prime factors:
No known factors for M3360061

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-06T04:17:00Carsten Kossendeydurandal15000206250---0.004--0.691%
2011-10-13T11:14:00harleeP4_260055000907500---0.015--1.606%
2014-06-09T10:16:00Jocelyn LaroucheManual testing7622576225---0.012--0.637%
2014-09-29T22:05:00Jocelyn LaroucheManual testing9532795327---0.015--0.732%
2015-07-17T19:20:00Squeeky_SquirrelP4_26002300006670000---0.088--3.423%
2020-11-18T20:45:03mikrMSI400000015000000012---1.821--8.137%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-06-06T00:00:00ANONYMOUSv4_computers21260--0.046--
2009-03-29T07:59:00S485122USB-Z260261--0.046--
2011-09-07T22:01:00Grant McCrackenthumper261262--0.091--
2012-11-15T00:21:00GrunwalderGIMPManual testing21263--0.475--
2016-02-23T16:29:26Mark RoseManual testing262263--0.292--
2015-02-11T09:07:00VictordeHollanderManual testing263264--0.584--
2015-02-11T09:07:00VictordeHollanderManual testing264265--1.112--
2016-03-03T15:34:06YxinityManual testing265266--2.224--
2017-03-05T04:56:34Gordon SpenceManual testing266267--4.448--
2018-12-03T19:08:40TJAOIManual testing267268--8.896--
2021-08-03T15:07:51Jocelyn LaroucheManual testing268269--17.79--


ECM factoring results:

Old Calculation Method

Total ECM effort:10.721 GHz-days
Estimated T-Level:3.550
DigitsB1CurvesCompleteFacMiss
201100071 / 1000.71048.989%
255000071 / 2800.25477.567%

New Calculation Method

Total ECM effort:10.721 GHz-days
Estimated T-Level:3.550
DigitsB1CompleteFacMiss
20110002.7766.231%
25500000.25777.344%
302500000.01698.390%


ECM Summary

B1B2factorcurvesGHz-days
500005000000578.337
50000675000071.185
50000690000071.199


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-26T00:00:00ANONYMOUSv4_computersE6371282D51AC6CE0.353


PRP results:
No PRP results for M3360061


P-1 factor-bounds graph:
B1 = 4000000, B2 = 150000000 (P-1 stage 2)
B1 = 4000000 (P-1 stage 1)
B1 = 230000, B2 = 6670000 (P-1 stage 2)
B1 = 230000 (P-1 stage 1)
B1 = 55000, B2 = 907500 (P-1 stage 2)
B1 = 95327 (P-1 stage 1)
B1 = 76225 (P-1 stage 1)
B1 = 55000 (P-1 stage 1)
B1 = 15000, B2 = 206250 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-05-04T11:01:18+00:00