Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24×C4 · Schur multiplier (H2) = C210 |
| direct product | C22×D4×Dic5 |
| Sylow | C5 ⋊ C22×C4×D4 |
2528 conjugacy classes of subgroups; only the 1197 normal subgroups are shown.
This group has 2528 conjugacy classes of subgroups — too many to draw. Only its 1197 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
160 conjugacy classes — view the full character table.
| maximal subgroup of | #12004720, #12004724, #12004864, … |
| maximal normal subgroup of | #12004720, #12004724, #12004864, … |
| maximal quotient of | C22×C22⋊C4×Dic5, C22×C4⋊C4×Dic5, C2×C4×D4×Dic5, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 21210);