is 26736799-1
has 2027979 decimal digits
takes 1.469 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LC612EC98D992045Adouble-checked
PRPF14859DD24505921double-checked

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26917.721666.6667%1000000230000000.69525.7022%18.416872.3689%8.8768%
PrimeNet2630.236963.4921%280007000000.02043.1462%0.257366.6383%3.1462%
GPU722674.410765.6716%400009000000.02752.1659%4.438167.8375%2.1659%
Difference+2+13.3109+0.9950%+960000+22100000+0.6677+3.5364%+13.9786+4.5314%+4.5314%

Known prime factors (1 factor, 124.4 bits, 0.00184603% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
67367992735645492070327869346196269194701384138124.3632030374879872716901117427037080
23 × 5 × 23 × 67 × 71 × 221747 × 304781 × 681257 × 10076243
681257100762432020-10-272.706e+100.37720.4384

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-23T18:48:00Carsten Kossendeyleela35000533750---0.020--1.393%
2012-07-16T05:33:00NesowaEPC800001440000---0.049--2.208%
2019-03-25T00:32:57takahashivaio25000044000006---0.151--3.484%
2020-10-27T00:04:11takahashivaio1000000230000001238124.3630.6952.9381.3905.702%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-05T00:00:00ANONYMOUSv4_computers?262--0.046--
2004-07-26T00:00:00ANONYMOUSv4_computers?263--0.146--
2014-06-29T00:28:00NesowaManual testing263264--0.291--
2014-07-03T07:08:00lycornManual testing264265--0.555--
2015-11-12T20:33:11snme2pm1Manual testing265266--1.109--
2016-05-02T19:59:30Gordon SpenceManual testing266267--2.218--
2018-02-27T02:58:05-Anonymous-Manual testing267268--4.437--
2020-05-08T08:18:58TJAOIManual testing268269--8.874--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00William B. Adamsv4_computers7E288D1410E4DA__1.469
1999-09-14T00:00:00ANONYMOUSv4_computersC612EC98D992045A1.469
2001-06-03T00:00:00ANONYMOUSv4_computers5B60D808C4FC2C__1.469
2001-11-03T00:00:00Stephenv4_computersC612EC98D992045A1.469


PRP results:
dateuseridcompidcofactorsres64PRP
2020-10-29T11:03:39Lord JuliusBabybox
27356454920703278693461962691947013841
F14859DD24505921no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 23000000 (stage 2)
B1 = 1000000 (stage 1)
B1 = 250000, B2 = 4400000 (stage 2)
B1 = 250000 (stage 1)
B1 = 80000, B2 = 1440000 (stage 2)
B1 = 80000 (stage 1)
B1 = 35000, B2 = 533750 (stage 2)
B1 = 35000 (stage 1)
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TF factor-bounds graph:
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2100
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Last modified: 2020-10-29T11:03:39+00:00