is 211382257-1
has 3,426,401 decimal digits
takes 3.851 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LFB70A4C55C1E8A93double-checked
PRP8F2202D3F89EC5__
needs double-check

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26910.488965.2174%130,0001,560,0000.10202.6663%10.590867.8837%5.3837%
PrimeNet2640.312762.5000%50,0001,500,0000.06334.0144%0.376066.5144%4.0144%
GPU722685.236664.7059%80,0001,900,0000.08792.8839%5.324567.5898%2.8839%
Difference+1+5.2522+0.5115%+50,000-340,000+0.0141-0.2177%+5.2663+0.2938%+0.2938%

Known prime factors (1 factor, 120.9 bits, 0.00106231% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
11382257250516261102242017239233317855922411137120.914110046830387963484412288932615
32 × 5 × 41 × 53 × 419 × 1489 × 5591 × 14081 × 119173 × 192263
119,173192,2632020-04-011.386e+100.06040.1190

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-10-22T00:00:00Richard Otterv4_computers130,0001,560,000---0.102--2.666%
2020-04-01T20:04:37riccardo ubertiNomad2C430,0001,560,00037120.9140.2117.7020.4223.062%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-30T00:00:00ANONYMOUSv4_computers?264--0.172--
2013-11-18T09:06:00lycornManual testing264265--0.328--
2015-05-05T00:48:00NesowaManual testing265266--0.657--
2016-01-04T21:25:23VictordeHollanderManual testing266267--1.313--
2017-12-27T12:57:27ramgeisManual testing267268--2.626--
2017-12-27T12:57:27ramgeisManual testing268269--5.252--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00021.029


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-11-25T00:00:00Richard Otterv4_computersFB70A4C55C1E8A933.851
2004-02-23T00:00:00ANONYMOUSv4_computersFB70A4C55C1E8A933.851


PRP results:
dateuseridcompidcofactorsres64PRP
2020-04-02T17:57:28riccardo ubertiTuareg8C
2505162611022420172392333178559224111
8F2202D3F89EC5__no


P-1 factor-bounds graph:
B1 = 430,000, B2 = 1,560,000 (stage 2)
B1 = 430,000 (stage 1)
B1 = 130,000, B2 = 1,560,000 (stage 2)
B1 = 130,000 (stage 1)
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TF factor-bounds graph:
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Last modified: 2020-04-02T17:57:28+00:00