Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #327 |
| automorphism | Aut(G) = C2×C8×#120 (order 512) · Inn(G) = C22⋊C4 · Out(G) = C22×C8 |
| homology | Abelianization (H1) = C2×C16 · Schur multiplier (H2) = C2 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C8 | C22⋊C4 |
| commutator | C2×C4 | C2×C16 |
| Frattini, cosocle | C4×C16 | C22 |
| socle | C22 | C22⋊C16 |
| prime radical | C2×D4 | C16 |
| LCS | G ▷ C2×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C2×C8 ◁ C4×C16 ◁ G | |
| LECS | G ▷ C4×C16 ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
64 conjugacy classes of subgroups.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 2 generators on 40 points:
(1,2)(3,5)(4,7)(6,8)(9,10,11,16,13,17,20,28,14,18,21,29,24,30,33,38,12,15,19,25,22,26,31,35,23,27,32,36,34,37,39,40);(2,5)(3,8)(6,7)(10,15)(11,19)(17,26)(18,27)(20,31)(21,32)(30,37)(33,39)Polycyclic presentation:
2^8|a^2=d,c^2=eh,d^2=f,f^2=g,g^2=h,b^a=bc,c^a=ce,c^b=ceh,d^b=dh76 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7380, #150047, #150048, … |
| maximal normal subgroup of | C2×#7380, #150047, #150048, … |
| maximal quotient of | #93746, #93754, #93756, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 368);