is 26187427-1
has 1,862,602 decimal digits
takes 1.097 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L45C6B0703961FA43double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2689.633266.1765%600,00012,000,0000.31385.2112%9.947071.3877%8.4844%
PrimeNet2620.099362.9032%26,000600,0000.01473.3464%0.114066.2497%3.3464%
GPU722662.386865.1515%40,000900,0000.02232.4295%2.409267.5810%2.4295%
Difference+2+7.2464+1.0250%+560,000+11,100,000+0.2915+2.7817%+7.5378+3.8067%+3.8067%

Known prime factors (1 factor, 121.9 bits, 0.00197001% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
6187427493564589507602918329365898744465787137121.893398844777892008195271932823405
5 × 19 × 89 × 293 × 863 × 3461 × 12899 × 318979 × 13100629
318,97913,100,6292019-09-063.024e+100.26090.3426

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-07T00:00:00ANONYMOUSv4_computers30,000240,000---0.011--1.190%
2001-06-09T00:00:00ANONYMOUSv4_computers25,00025,000---0.006--0.388%
2013-03-28T17:46:00Squeeky_SquirrelP4_2600115,0002,271,250---0.060--2.932%
2019-09-06T16:49:56takahashivaio600,00012,000,0001237121.8930.3142.1930.6285.211%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-09-13T00:00:00ANONYMOUSv4_computers?262--0.050--
2016-02-23T16:39:19Mark RoseManual testing262263--0.159--
2014-09-10T22:06:00NesowaManual testing263264--0.317--
2014-09-18T14:31:00monstManual testing264265--0.604--
2015-10-10T11:14:11Bruno VictalManual testing265266--1.208--
2016-04-13T17:00:27Gordon SpenceManual testing266267--2.415--
2018-05-30T12:53:37ramgeisManual testing267268--4.831--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00061.617


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-21T00:00:00GlennMaitzv4_computers45C6B0703961FA431.097
2001-08-12T00:00:00ANONYMOUSv4_computers45C6B0703961FA431.097
2015-04-29T21:04:00MadPooManual testing45C6B0703961FA431.097


PRP results:
dateuseridcompidcofactorsres64PRP
2019-09-07T07:25:02mnd975202b
4935645895076029183293658987444657871
584BD8F857332DB9no
2019-09-08T06:34:58kkmrkkblmbrbkc5.large
4935645895076029183293658987444657871
584BD8F857332DB9no


P-1 factor-bounds graph:
B1 = 600,000, B2 = 12,000,000 (stage 2)
B1 = 600,000 (stage 1)
B1 = 115,000, B2 = 2,271,250 (stage 2)
B1 = 115,000 (stage 1)
B1 = 30,000, B2 = 240,000 (stage 2)
B1 = 30,000 (stage 1)
B1 = 25,000 (stage 1)
103
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106
103
104
105
106
107
108
TF factor-bounds graph:
268
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265
264
263
262
250
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270
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290
2100
2110
2120
2130
Last modified: 2019-09-08T06:34:58+00:00