Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D4 |
| automorphism | Aut(G) order 262144 |
| homology | Abelianization (H1) = C22×C4×C8 · Schur multiplier (H2) = C23×C42 |
| direct product | C4×#431 |
| subgroup | G/H | |
|---|---|---|
| center | C43 | C22 |
| commutator | C2 | C22×C4×C8 |
| Frattini, cosocle | C22×C4 | C24 |
| socle | C23 | C23×C4 |
| prime radical | C24 | C22×C4 |
| LCS | G ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C43 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
659 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(1,2,3,4);(5,6)(7,10)(8,9)(11,12)(13,14,15,17,16,18,19,20);(6,9)(10,12);(5,7,8,11)(6,10,9,12)160 conjugacy classes — view the full character table.
| maximal subgroup of | #94863, #94865, #94867, … |
| maximal normal subgroup of | #94863, #94865, #94867, … |
| maximal quotient of | C8×#431, #183722, #183723, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 13449);