Finite Group DatabasebetaFinite Group Databasebeta| order | 20420 |
| automorphism | ? |
| homology | Abelianization (H1) = C4×C1021 · Schur multiplier (H2) = C1 |
| direct product | Dic5×C1021 |
| derived, Sylow | C5 ⋊ C4×C1021 |
| Hall | C5×C1021 ⋊ C4 |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C2×C1021 | D5 |
| commutator, hypocenter | C5 | C4×C1021 |
| Frattini | C2 | D5×C1021 |
| Fitting, socle, prime radical | C2×C5×C1021 | C2 |
| cosocle | C2×C5 | C2×C1021 |
| LCS | G ▷ C5 | |
| UCS | C1 ◁ C2×C1021 | |
12 conjugacy classes of subgroups.
| transitive degree | μt(G) = 20420 |
8168 conjugacy classes. The character table is too large to display.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(20420, 4);