Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 5 |
| isoclinism | isoclinic class of #7402 |
| automorphism | Aut(G) = C22×#501097 (order 2048) · Inn(G) = #353 · Out(G) = C22×D4 |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #353 |
| commutator | C2×C42 | C2×C4 |
| Frattini, cosocle | #390 | C22 |
| prime radical | C22×D4 | D4 |
| LCS | G ▷ C2×C42 ▷ C22×C4 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C23 ◁ C22×C4 ◁ #390 ◁ G | |
| LECS | G ▷ #390 ▷ C22×C4 ▷ C22 ▷ C2 ▷ C1 | |
112 conjugacy classes of subgroups.
| minimal degree | μ(G) = 24 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 2 generators on 24 points:
(2,5,6,7)(9,10)(11,18,20,14)(12,16,19,15)(13,17)(21,22,24,23);(1,2)(3,7)(4,6)(5,8)(9,11,19,24,13,21,12,20)(10,14,16,22,17,23,15,18)Polycyclic presentation:
2^8|a^2=d,b^2=eg,c^2=fgh,e^2=h,b^a=bc,c^a=ce,e^a=eg,g^a=gh,c^b=cf,d^b=defg,d^c=dgh,e^d=eh28 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7434, #150284, #150285, … |
| maximal normal subgroup of | C2×#7434, #150284, #150285, … |
| maximal quotient of | #93241, #93245, #93957, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 422);