Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #12366 |
| automorphism | Aut(G) = #72279473 (order 2048) · Inn(G) = #1629 · Out(G) = C22⋊C4 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C2 | #1629 |
| commutator, Frattini, cosocle | C4×C8 | C23 |
| prime radical | #3292 | C2 |
| LCS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2 ◁ C2×C4 ◁ C4×C8 ◁ G | |
| LECS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
182 conjugacy classes of subgroups; only the 39 normal subgroups are shown.
This group has 182 conjugacy classes of subgroups — too many to draw. Only its 39 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) = 16 |
A minimal faithful permutation representation — 3 generators on 16 points:
(2,6,8,16)(3,10)(4,13)(7,12,9,15)(11,14);(3,11)(4,13)(6,12)(7,9)(10,14)(15,16);(1,2)(3,12)(4,7)(5,8)(6,11)(9,13)(10,16)(14,15)Polycyclic presentation:
2^8|a^2=f,d^2=f,e^2=gh,g^2=h,b^a=bd,c^a=ce,d^a=df,e^a=egh,g^a=gh,d^b=df,e^b=eg,g^b=gh,d^c=dg,e^c=eg,f^c=fh,g^c=gh28 conjugacy classes — view the full character table.
| maximal subgroup of | #153633, #153634, #153635, … |
| maximal normal subgroup of | #153633, #153634, #153635, … |
| maximal quotient of | #125892, #125894, #125947, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5354);