Finite Group Databasebeta

D8128 #30636943

order16256
automorphismAut(G) order 32772096
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD8128

Splittings

FittingC64×C127 ⋊ C2
SylowC127 ⋊ D64

Subgroups

subgroupG/H
centerC2D4064
commutator, cosocleC32×C127C22
FrattiniC32C2×D127
FittingC64×C127C2
socleC2×C127D32
hypercenterC64D127
hypocenterC127D64
LCSG ▷ C32×C127 ▷ C16×C127 ▷ C8×C127 ▷ C4×C127 ▷ C2×C127 ▷ C127
UCSC1 ◁ C2 ◁ C4 ◁ C8 ◁ C16 ◁ C32 ◁ C64

40 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 191
transitive degreeμt(G) = 8128

A minimal faithful permutation representation — 2 generators on 191 points:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64)(65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191);(2,64)(3,63)(4,62)(5,61)(6,60)(7,59)(8,58)(9,57)(10,56)(11,55)(12,54)(13,53)(14,52)(15,51)(16,50)(17,49)(18,48)(19,47)(20,46)(21,45)(22,44)(23,43)(24,42)(25,41)(26,40)(27,39)(28,38)(29,37)(30,36)(31,35)(32,34)(66,191)(67,190)(68,189)(69,188)(70,187)(71,186)(72,185)(73,184)(74,183)(75,182)(76,181)(77,180)(78,179)(79,178)(80,177)(81,176)(82,175)(83,174)(84,173)(85,172)(86,171)(87,170)(88,169)(89,168)(90,167)(91,166)(92,165)(93,164)(94,163)(95,162)(96,161)(97,160)(98,159)(99,158)(100,157)(101,156)(102,155)(103,154)(104,153)(105,152)(106,151)(107,150)(108,149)(109,148)(110,147)(111,146)(112,145)(113,144)(114,143)(115,142)(116,141)(117,140)(118,139)(119,138)(120,137)(121,136)(122,135)(123,134)(124,133)(125,132)(126,131)(127,130)(128,129)

Polycyclic presentation:

2^7,127|c^2=de,d^2=ef,e^2=fg,f^2=g,b^a=bc,c^a=cd,d^a=de,e^a=ef,f^a=fg,h^a=h^126,c^b=cd,d^b=de,e^b=ef,f^b=fg,h^b=h^126

Conjugacy classes & character table

4067 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD24384
maximal quotient ofD24384

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(16256, 2723);