is 25937889-1
has 1,787,483 decimal digits
takes 1.052 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LD268329F19634467double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2662.487265.1515%360,0008,910,0000.21225.6214%2.699470.7729%7.8697%
PrimeNet2620.103562.9032%26,000600,0000.01473.3240%0.118266.2273%3.3240%
GPU722662.487265.1515%40,000800,0000.02092.3437%2.508167.4952%2.3437%
Difference---+320,000+8,110,000+0.1913+3.2776%+0.1913+3.2776%+3.2776%

Known prime factors (2 factors, 186.4 bits, 0.00313919% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
5937889406062629151219830872065.1383419250756887
7 × 5119 × 95421839
5,11995,421,8392018-06-211.76451.33722.4952
5937889319062154285653340914627864012759759137121.263268666317512548096566496834155
3 × 5 × 19 × 73 × 89 × 541 × 8623 × 17981 × 346207 × 4996319
346,2074,996,3192014-11-162.362e+100.15410.1811

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
593788912955921723188453760252139889823619403055156419304
3943417
57186.402
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-10-15T00:00:00ANONYMOUSv4_computers25,00025,000---0.006--0.536%
2011-03-17T14:00:00harleeP4_260070,0001,120,000---0.033--2.853%
2014-11-16T09:29:00Nesowanewfs360,0008,910,0001237121.2630.2122.1050.4245.621%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-23T00:00:00ANONYMOUSv4_computers?262--0.052--
2014-09-29T09:32:00NesowaManual testing263264--0.331--
2014-09-30T23:29:00monstManual testing264265--0.629--
2018-06-21T11:40:17TJAOIManual testing26526665.138200.5362.1391.089


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00030.808


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-25T00:00:00ANONYMOUSv4_computersD268329F196344671.052
2001-03-17T00:00:00ANONYMOUSv4_computersD268329F196344671.052


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:12:18kkmrkkblmbrbkManual testing
3190621542856533409146278640127597591
78921C9EA591A3__no
2018-06-21T17:58:59francijezekstac1
40606262915121983087
3190621542856533409146278640127597591
4C26E9FBBB800B__no
2018-06-23T06:30:43kkmrkkblmbrbkc5.large
40606262915121983087
3190621542856533409146278640127597591
4C26E9FBBB800B__no


P-1 factor-bounds graph:
B1 = 360,000, B2 = 8,910,000 (stage 2)
B1 = 360,000 (stage 1)
B1 = 70,000, B2 = 1,120,000 (stage 2)
B1 = 70,000 (stage 1)
B1 = 25,000 (stage 1)
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108
TF factor-bounds graph:
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2120
2130
Last modified: 2018-06-23T06:30:43+00:00