Finite Group DatabasebetaFinite Group Databasebeta| order | 220 |
| nilpotency class | 1 |
| isoclinism | isoclinic class of C1 |
| automorphism | Aut(G) = C22×C4×C5 (order 80) · Inn(G) = C1 · Out(G) = C22×C4×C5 |
| holomorph | G ⋊ Aut(G) = D4×AGL(1,𝔽5)×AGL(1,𝔽11) |
| homology | Abelianization (H1) = G · Schur multiplier (H2) = C1 |
| cyclic | C220 |
| abelian | C4×C5×C11 |
| subgroup | G/H | |
|---|---|---|
| center | G | C1 |
| commutator | C1 | G |
| Frattini, cosocle | C2 | C2×C5×C11 |
| socle, prime radical | C2×C5×C11 | C2 |
| LCS | G ▷ C1 | |
| UCS | C1 ◁ G | |
12 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 220 |
A minimal faithful permutation representation — 1 generator on 20 points:
(1,2,3,4)(5,6,7,8,9)(10,11,12,13,14,15,16,17,18,19,20)220 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(220, 6);