is 2 2433917 - 1
has 732683 decimal digits
takes 0.164 GHz-days to do one PRP test
Last-known PrimeNet details:
Assigned as ecm on 2022-06-01, 0.0% done, ETC 2022-06-02
0 primality tests remaining
ResidueStatus
L-L19C6F22D69A5DD66double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26949.051368.1159%1986400695240000.55506.5896%49.606370.2170%2.1010%
PrimeNet2590.031662.7119%100001800000.00192.5251%0.033463.6534%0.9416%
GPU722630.655765.0794%100001500000.00171.3058%0.657565.5354%0.4560%
Difference+6+48.3956+3.0366%+1976400+69374000+0.5533+5.2837%+48.9489+4.6816%+4.6816%

Known prime factors:
No known factors for M2433917

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-14T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.188%
2003-10-31T00:00:00Team Prime Ribv4_computers15000217500---0.003--0.657%
2010-11-17T11:34:00Jocelyn LaroucheManual testing2000020000---0.002--0.220%
2011-01-09T14:24:00Oscar Östlin7501175011---0.007--0.592%
2011-01-24T12:33:00Oscar Östlin950001923750---0.019--2.095%
2014-05-02T07:40:00mikrMSI198640069524000---0.555--6.590%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-02-08T00:00:00ANONYMOUSv4_computers21258--0.016--
1999-03-15T00:00:00ANONYMOUSv4_computers21259--0.032--
2016-02-23T16:29:14Mark RoseManual testing259260--0.032--
2009-01-10T20:30:00Sturle Sundedanzi.ifi260261--0.063--
2012-06-05T17:43:00Sebastian HornbostelManual testing261262--0.126--
2013-01-23T08:28:00dbaughManual testing262263--0.403--
2015-02-27T20:40:00VictordeHollanderManual testing263264--0.807--
2015-02-27T20:40:00VictordeHollanderManual testing264265--1.535--
2015-10-25T20:34:59ramgeisManual testing265266--3.070--
2017-07-08T12:01:25Gordon SpenceManual testing266267--6.141--
2019-06-24T09:35:58TJAOIManual testing267268--12.28--
2021-07-26T11:06:23TJAOIManual testing268269--24.56--


ECM factoring results:

Old Calculation Method

Total ECM effort:14.691 GHz-days
Estimated T-Level:22.911
DigitsB1CurvesCompleteFacMiss
2011000163 / 1001.63019.433%
2550000163 / 2800.58255.812%

New Calculation Method

Total ECM effort:14.691 GHz-days
Estimated T-Level:22.911
DigitsB1CompleteFacMiss
20110006.3040.183%
25500000.58355.812%
302500000.03796.386%
3510000000.00299.828%


ECM Summary

B1B2factorcurvesGHz-days
50000420000070.582
50000500000013512.04
50000520000070.635
500006750000141.432


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-02-08T00:00:00ANONYMOUSv4_computers19C6F22D69A5DD660.164
1999-04-02T00:00:00ANONYMOUSv4_computers19C6F22D69A5DD660.164
2018-05-22T18:48:15kkmrkkblmbrbkold19C6F22D69A5DD660.164


PRP results:
No PRP results for M2433917


P-1 factor-bounds graph:
B1 = 1986400, B2 = 69524000 (P-1 stage 2)
B1 = 1986400 (P-1 stage 1)
B1 = 95000, B2 = 1923750 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 75011 (P-1 stage 1)
B1 = 15000, B2 = 217500 (P-1 stage 2)
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: 2022-06-30T12:08:03+00:00