Finite Group DatabasebetaFinite Group Databasebeta| order | 220 |
| nilpotency class | 1 |
| isoclinism | isoclinic class of C1 |
| automorphism | Aut(G) = C2×C4×C5×D3 (order 240) · Inn(G) = C1 · Out(G) = C2×C4×C5×D3 |
| homology | Abelianization (H1) = G · Schur multiplier (H2) = C2 |
| abelian | C22×C5×C11 |
| multiplicative | (ℤ/253)ˣ, (ℤ/363)ˣ, (ℤ/484)ˣ, (ℤ/506)ˣ, (ℤ/726)ˣ |
| subgroup | G/H | |
|---|---|---|
| center | G | C1 |
| commutator, Frattini | C1 | G |
| LCS | G ▷ C1 | |
| UCS | C1 ◁ G | |
20 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 220 |
A minimal faithful permutation representation — 2 generators on 20 points:
(1,2)(5,6,7,8,9)(10,11,12,13,14,15,16,17,18,19,20);(3,4)220 conjugacy classes — view the full character table.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(220, 15);