Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #465 |
| automorphism | ? |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C28×C4 |
| direct product | C22×#486 |
| subgroup | G/H | |
|---|---|---|
| center, socle | C24 | C2×D4 |
| commutator, Frattini, cosocle | C2×C4 | C25 |
| prime radical | C22×#127 | C2 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
1543 conjugacy classes of subgroups; only the 607 normal subgroups are shown.
This group has 1543 conjugacy classes of subgroups — too many to draw. Only its 607 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(1,2);(3,4);(5,6)(7,10)(8,9)(11,12)(14,19)(15,20)(16,17);(6,9)(10,12)(13,14,17,15,18,20,16,19);(5,7,8,11)(6,10,9,12)(13,15,16,14,18,19,17,20)88 conjugacy classes — view the full character table.
| Fitting subgroup of | A4×#486 |
| maximal subgroup of | #111348, #111383, #111384, … |
| maximal normal subgroup of | #111348, #111383, #111384, … |
| maximal quotient of | C22×#1834, C22×#1934, C22×#1957, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 53590);