Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 5 |
| isoclinism | isoclinic class of #1402 |
| automorphism | Aut(G) = C23×#2196 (order 1024) · Inn(G) = AΣL(1,𝔽16) · Out(G) = C24 |
| homology | Abelianization (H1) = C2×C8 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | AΣL(1,𝔽16) |
| commutator | C2×D4 | C2×C8 |
| Frattini, cosocle | #390 | C22 |
| prime radical | C2×H(5,𝔽2) | C4 |
| LCS | G ▷ C2×D4 ▷ C2×C4 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C23 ◁ C22×C4 ◁ #390 ◁ G | |
| LECS | G ▷ #390 ▷ C22×C4 ▷ C22 ▷ C2 ▷ C1 | |
188 conjugacy classes of subgroups; only the 25 normal subgroups are shown.
This group has 188 conjugacy classes of subgroups — too many to draw. Only its 25 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) = 32 |
A minimal faithful permutation representation — 2 generators on 24 points:
(1,2,3,5,4,6,7,8)(9,10)(11,18,19,14)(12,16,22,15)(13,17)(20,24,21,23);(9,11)(10,14)(12,21)(13,20)(15,18)(16,24)(17,23)(19,22)Polycyclic presentation:
2^8|a^2=d,d^2=f,e^2=h,b^a=bc,c^a=ce,e^a=eg,g^a=gh,d^b=deh,e^b=eh,g^b=gh,d^c=dgh,e^c=eh,e^d=eh34 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7344, #149538, #149539, … |
| maximal normal subgroup of | C2×#7344, #149538, #149539, … |
| maximal quotient of | #93191, #93192, #93194, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 332);