Finite Group DatabasebetaFinite Group Databasebeta| order | 1640 |
| isoclinism | isoclinic class of D205 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C2 |
| direct product | C4×D205 |
| Fitting | C4×C5×C41 ⋊ C2 |
| derived, Hall | C5×C41 ⋊ C2×C4 |
| Sylow | C41 ⋊ C4×D5 |
| Sylow | C5 ⋊ C4×D41 |
| subgroup | G/H | |
|---|---|---|
| center, hypercenter | C4 | D205 |
| commutator, hypocenter | C5×C41 | C2×C4 |
| Frattini | C2 | C2×D205 |
| Fitting | C4×C5×C41 | C2 |
| socle, cosocle | C2×C5×C41 | C22 |
| prime radical | C2×D205 | C2 |
| LCS | G ▷ C5×C41 | |
| UCS | C1 ◁ C4 | |
32 conjugacy classes of subgroups.
| transitive degree | μt(G) = 820 |
416 conjugacy classes. The character table is too large to display.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(1640, 40);