is 2 2406307 - 1
has 724371 decimal digits
takes 0.163 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L540666C912F59FECdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27099.301868.5714%3102822434395080.51925.7711%99.821070.3852%1.8138%
PrimeNet2590.031962.7119%100001800000.00192.5197%0.033863.6514%0.9396%
GPU722630.663365.0794%100001400000.00171.2755%0.664965.5248%0.4454%
Difference+7+98.6385+3.4921%+3092822+43299508+0.5175+4.4956%+99.1561+4.8604%+1.3684%

Known prime factors:
No known factors for M2406307

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.150%
2010-11-09T10:50:00Jocelyn LaroucheManual testing1500015000---0.001--0.140%
2010-11-16T23:08:00Jocelyn LaroucheManual testing2000020000---0.002--0.183%
2010-12-22T03:04:00markrtiny950001923750---0.019--1.849%
2014-02-28T23:03:00mikrMSI310282243439508---0.519--5.771%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-03-15T00:00:00Stephen Woodv4_computers21259--0.032--
2016-02-23T16:29:13Mark RoseManual testing259260--0.032--
2009-01-14T16:56:00Sturle Sundegopher.ifi260261--0.064--
2012-06-03T14:43:00Sebastian HornbostelManual testing261262--0.128--
2013-01-23T08:28:00dbaughManual testing262263--0.408--
2015-02-27T20:40:00VictordeHollanderManual testing263264--0.816--
2015-02-27T20:40:00VictordeHollanderManual testing264265--1.553--
2015-10-21T10:28:05ramgeisManual testing265266--3.105--
2017-06-29T16:14:24Gordon SpenceManual testing266267--6.211--
2019-02-09T12:31:12Anton RepkoManual testing267269--37.27--
2019-03-12T16:20:13YxinityManual testing269270--49.69--


ECM factoring results:
Total ECM effort:15.766 GHz-days
Estimated T-Level:23.134
DigitsB1CompleteFacMiss
20110006.7760.114%
25500000.62753.430%
302500000.04096.120%
3510000000.00299.815%


ECM Summary

B1B2factorcurvesGHz-days
50000500000016114.34
500006750000141.429


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-23T00:00:00Stephen Woodv4_computers540666C912F59FEC0.163
2018-05-18T09:59:11kkmrkkblmbrbkold540666C912F59FEC0.163


PRP results:
No PRP results for M2406307


P-1 factor-bounds graph:
B1 = 3102822, B2 = 43439508 (P-1 stage 2)
B1 = 3102822 (P-1 stage 1)
B1 = 95000, B2 = 1923750 (P-1 stage 2)
B1 = 95000 (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: 2022-07-11T08:47:23+00:00