Finite Group Databasebeta
Cayley diagram

D256 #94846

order512
nilpotency class8
isoclinismisoclinic class of D256
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD256

Subgroups

subgroupG/H
center, socleC2D128
commutator, Frattini, cosocleC128C22
LCSG ▷ C128 ▷ C64 ▷ C32 ▷ C16 ▷ C8 ▷ C4 ▷ C2 ▷ C1
UCSC1 ◁ C2 ◁ C4 ◁ C8 ◁ C16 ◁ C32 ◁ C64 ◁ C128 ◁ G
LECSG ▷ C128 ▷ C64 ▷ C32 ▷ C16 ▷ C8 ▷ C4 ▷ C2 ▷ C1

26 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 256
transitive degreeμt(G) = 256

A minimal faithful permutation representation — 2 generators on 256 points:

(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256);(2,256)(3,255)(4,254)(5,253)(6,252)(7,251)(8,250)(9,249)(10,248)(11,247)(12,246)(13,245)(14,244)(15,243)(16,242)(17,241)(18,240)(19,239)(20,238)(21,237)(22,236)(23,235)(24,234)(25,233)(26,232)(27,231)(28,230)(29,229)(30,228)(31,227)(32,226)(33,225)(34,224)(35,223)(36,222)(37,221)(38,220)(39,219)(40,218)(41,217)(42,216)(43,215)(44,214)(45,213)(46,212)(47,211)(48,210)(49,209)(50,208)(51,207)(52,206)(53,205)(54,204)(55,203)(56,202)(57,201)(58,200)(59,199)(60,198)(61,197)(62,196)(63,195)(64,194)(65,193)(66,192)(67,191)(68,190)(69,189)(70,188)(71,187)(72,186)(73,185)(74,184)(75,183)(76,182)(77,181)(78,180)(79,179)(80,178)(81,177)(82,176)(83,175)(84,174)(85,173)(86,172)(87,171)(88,170)(89,169)(90,168)(91,167)(92,166)(93,165)(94,164)(95,163)(96,162)(97,161)(98,160)(99,159)(100,158)(101,157)(102,156)(103,155)(104,154)(105,153)(106,152)(107,151)(108,150)(109,149)(110,148)(111,147)(112,146)(113,145)(114,144)(115,143)(116,142)(117,141)(118,140)(119,139)(120,138)(121,137)(122,136)(123,135)(124,134)(125,133)(126,132)(127,131)(128,130)

Polycyclic presentation:

2^9|c^2=de,d^2=ef,e^2=fg,f^2=gh,g^2=hi,h^2=i,b^a=bc,c^a=cd,d^a=de,e^a=ef,f^a=fg,g^a=gh,h^a=hi,c^b=cd,d^b=de,e^b=ef,f^b=fg,g^b=gh,h^b=hi

Conjugacy classes & character table

131 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD512, D768, D1280, …
maximal normal subgroup ofD512, SD1024
maximal quotient ofD512, D768, D1280, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(512, 2042);