Finite Group DatabasebetaFinite Group Databasebeta| order | 21420 |
| automorphism | ? |
| homology | Abelianization (H1) = C3×C7×C17 · Schur multiplier (H2) = C2 |
| direct product | C3×C7×C17×A5 |
| subgroup | G/H | |
|---|---|---|
| center, Fitting, hypercenter | C3×C7×C17 | A5 |
| commutator, hypocenter | A5 | C3×C7×C17 |
| Frattini | C1 | G |
| LCS | G ▷ A5 | |
| UCS | C1 ◁ C3×C7×C17 | |
84 conjugacy classes of subgroups.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 1785 |
A minimal faithful permutation representation — 2 generators on 32 points:
(28,29,30);(1,2,3)(4,5,6,7,8,9,10)(11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27)(28,29,30,31,32)1785 conjugacy classes. The character table is too large to display.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(21420, 426);