Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #120 |
| automorphism | Aut(G) = C29×C4 (order 2048) · Inn(G) = C23 · Out(G) = C26×C4 |
| homology | Abelianization (H1) = C22×C16 · Schur multiplier (H2) = C2×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, cosocle | C22×C8 | C23 |
| commutator | C22 | C22×C16 |
| socle, prime radical | C23 | C22×C8 |
| LCS | G ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22×C8 ◁ G | |
| LECS | G ▷ C22×C8 ▷ C4 ▷ C2 ▷ C1 | |
163 conjugacy classes of subgroups; only the 91 normal subgroups are shown.
This group has 163 conjugacy classes of subgroups — too many to draw. Only its 91 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 28 |
| transitive degree | μt(G) = 256 |
A minimal faithful permutation representation — 3 generators on 28 points:
(1,2)(3,4)(5,6)(7,10)(8,9)(11,12)(13,14,18,23,19,15,24,25,17,22,26,28,16,21,20,27);(6,9)(10,12)(13,15,18,25,19,22,24,28,17,21,26,27,16,14,20,23);(2,4)(5,7,8,11)(6,10,9,12)(13,16,17,19)(14,21,22,15)(18,20,26,24)(23,27,28,25)Polycyclic presentation:
2^8|a^2=f,b^2=f,c^2=d,f^2=g,g^2=h,b^a=bd,c^a=ce112 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#13104, #494764, #494766, … |
| maximal normal subgroup of | C2×#13104, #494764, #494766, … |
| maximal quotient of | #140066, #140073, #140077, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 6092);