Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of AΣL(1,𝔽16) |
| automorphism | Aut(G) = C22×D4×B(4,𝔽2) (order 2048) · Inn(G) = #99 · Out(G) = C23×D4 |
| homology | Abelianization (H1) = C4×C8 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | #99 |
| commutator | C23 | C4×C8 |
| Frattini, cosocle | C2×C4×D4 | C22 |
| socle | C22 | #342 |
| prime radical | C22×D4 | C2×C4 |
| LCS | G ▷ C23 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C22×C4 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C2×C4×D4 ▷ C23 ▷ C2 ▷ C1 | |
182 conjugacy classes of subgroups; only the 51 normal subgroups are shown.
This group has 182 conjugacy classes of subgroups — too many to draw. Only its 51 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 16 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 2 generators on 16 points:
(1,2,4,7,6,8,5,3)(9,10)(11,15,16,13)(12,14);(1,3,5,8,6,7,4,2)(10,13)(14,15)Polycyclic presentation:
2^8|a^2=d,b^2=e,d^2=g,e^2=g,b^a=bc,c^a=cf,f^a=fh,d^b=df,d^c=dh52 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7203, #127066, #127067, … |
| maximal normal subgroup of | C2×#7203, #127066, #127067, … |
| maximal quotient of | #92995, #92999, #93003, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 191);