Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #12148 |
| automorphism | Aut(G) = C25×B(4,𝔽2) (order 2048) · Inn(G) = B(4,𝔽2) · Out(G) = C25 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | B(4,𝔽2) |
| commutator, Frattini, cosocle | C2×C22⋊C4 | C23 |
| prime radical | #534 | C22 |
| LCS | G ▷ C2×C22⋊C4 ▷ C23 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C23 ◁ C2×C22⋊C4 ◁ G | |
| LECS | G ▷ C2×C22⋊C4 ▷ C23 ▷ C2 ▷ C1 | |
216 conjugacy classes of subgroups; only the 37 normal subgroups are shown.
This group has 216 conjugacy classes of subgroups — too many to draw. Only its 37 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 24 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 3 generators on 24 points:
(1,2)(3,5)(4,7)(6,8)(9,10)(11,18)(12,16)(13,17)(14,19)(15,21)(20,22)(23,24);(2,5)(3,8)(6,7)(9,11,13,20)(10,14,17,23)(12,19,21,24)(15,22,16,18);(9,12,13,21)(10,15)(11,19,20,24)(14,22)(16,17)(18,23)Polycyclic presentation:
2^8|b^2=h,c^2=g,d^2=f,b^a=bd,c^a=ce,d^a=df,g^a=gh,d^b=df,e^b=egh,d^c=dg,e^c=eh,e^d=eh28 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#12150, #484582, #484583, … |
| maximal normal subgroup of | C2×#12150, #484582, #484583, … |
| maximal quotient of | #123219, #123220, #123223, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5138);