Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #24264 |
| automorphism | Aut(G) order 65536 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | C22×D4 | D4 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
465 conjugacy classes of subgroups; only the 139 normal subgroups are shown.
This group has 465 conjugacy classes of subgroups — too many to draw. Only its 139 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 — 4 generators on 20 points:
(2,4)(5,6)(7,11)(8,9)(10,12)(13,14,17,19)(15,18,16,20);(6,9)(10,11)(13,15,19,20,17,16,14,18);(1,2,3,4)(13,16,17,15)(14,18,19,20);(5,7,8,12)(6,10,9,11)Polycyclic presentation:
2^8|a^2=h,b^2=gh,c^2=f,d^2=e,g^2=h,b^a=be,c^a=cf,d^a=de,c^b=cg,g^c=gh58 conjugacy classes — view the full character table.
| maximal subgroup of | #141426, #141508, #141570, … |
| maximal normal subgroup of | #141426, #141508, #141570, … |
| maximal quotient of | #324412, #324413, #324414, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 21588);