Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| isoclinism | isoclinic class of Dic10 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C16 · Schur multiplier (H2) = C23 |
| direct product | C16×D20 |
| Fitting | C4×C5×C16 ⋊ C2 |
| Sylow | C5 ⋊ D4×C16 |
174 conjugacy classes of subgroups; only the 81 normal subgroups are shown.
This group has 174 conjugacy classes of subgroups — too many to draw. Only its 81 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
208 conjugacy classes — view the full character table.
| maximal subgroup of | #11986737, #11986739, C16×#686, … |
| maximal normal subgroup of | #11986737, #11986739, C16×#686, … |
| maximal quotient of | C16×D40, C16×#677, C16×Dic20, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1929);