is 2 1331059 - 1
has 400689 decimal digits
takes 0.051 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LAAEFE1D193394EB2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual270179.519270.0000%500000150000000.07143.6256%179.590671.0877%1.0877%
PrimeNet2560.007262.5000%60001000000.00062.6057%0.007863.4771%0.9771%
GPU722600.115465.0000%5500400000.00040.9785%0.115865.3425%0.3425%
Difference+10+179.4038+5.0000%+494500+14960000+0.0710+2.6471%+179.4748+5.7452%+0.7452%

Known prime factors (1 factor, 69.3 bits, 0.00520721% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
13310597323027583979134125832169.311275082756811649
275082756811649
2014-02-181275082756811649143.92829,7221,549,690

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers15000213750---0.001--0.489%
2016-03-17T19:05:05alpertronManual testing5000001500000012---0.071--3.626%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-03T00:00:00ANONYMOUSv4_computers21257--0.014--
2003-06-23T00:00:00ANONYMOUSv4_computers21258--0.029--
2022-03-07T17:32:34LordJuliusManual testing258260--0.087--
2009-02-16T03:01:00Sturle Sundescarpia.ifi260261--0.115--
2012-09-01T08:44:00lycornManual testing261264--2.443--
2013-10-19T11:56:00David CampeauManual testing264265--2.807--
2014-02-04T13:10:00Never Odd Or EvenManual testing265266--5.614--
2014-02-04T13:10:00Never Odd Or EvenManual testing266267--11.23--
2014-02-04T13:10:00Never Odd Or EvenManual testing267268--22.46--
2014-02-04T13:10:00Never Odd Or EvenManual testing268269--44.91--
2014-02-04T13:10:00Never Odd Or EvenManual testing269270--89.83--
2014-02-18T12:57:00Never Odd Or EvenManual testing26927069.3112154.230.103110.2


ECM factoring results:
Total ECM effort:25.141 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025111.71
250000350000005013.43


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2010-03-17T00:00:00Bruce A Metcalfv4_computersAAEFE1D193394EB20.051


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T04:36:03Oliver KruseGTX-2
732302758397913412583
486FF828B669C2__no
2017-10-23T20:03:33kkmrkkblmbrbkc4.xlarge
732302758397913412583
486FF828B669C2__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 15000, B2 = 213750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-03-07T17:32:34+00:00