Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #12324 |
| automorphism | Aut(G) = C23×#21452 (order 2048) · Inn(G) = #447 · Out(G) = C23×C4 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #447 |
| commutator, Frattini, cosocle | C4×C8 | C23 |
| prime radical | C2×D8 | D4 |
| LCS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C42 ◁ #446 ◁ G | |
| LECS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
146 conjugacy classes of subgroups; only the 41 normal subgroups are shown.
This group has 146 conjugacy classes of subgroups — too many to draw. Only its 41 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 3 generators on 40 points:
(2,6)(3,7)(4,8)(9,10,15,19)(11,20,23,38)(12,17,14,29)(13,25,28,36)(16,31,33,22)(18,24,37,27)(21,39,30,35)(26,32,40,34);(1,2,5,3)(4,7,8,6)(9,11,15,23)(10,16,19,33)(12,21,14,30)(13,26,28,40)(17,32,29,34)(18,35,37,39)(20,36,38,25)(22,24,31,27);(1,3,5,2)(4,6,8,7)(9,12,15,14)(10,17,19,29)(11,21,23,30)(13,27,28,24)(16,32,33,34)(18,36,37,25)(20,35,38,39)(22,40,31,26)Polycyclic presentation:
2^8|a^2=h,b^2=g,c^2=g,d^2=fh,e^2=gh,f^2=h,b^a=bd,c^a=ce,d^a=df,e^a=egh,f^a=fh,d^b=df,e^b=eg,f^b=fh,d^c=dg,e^c=egh31 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#12362, #489057, #489058, … |
| maximal normal subgroup of | C2×#12362, #489057, #489058, … |
| maximal quotient of | #125662, #125664, #125751, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5350);