Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C25 |
| direct product | C2×#65732 |
| Fitting | C2×C5×D8 ⋊ C4 |
| Sylow | C5 ⋊ C2×#443 |
472 conjugacy classes of subgroups; only the 162 normal subgroups are shown.
This group has 472 conjugacy classes of subgroups — too many to draw. Only its 162 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 160 |
70 conjugacy classes — view the full character table.
| maximal subgroup of | #13025887, #13025891, #13025907, … |
| maximal normal subgroup of | #13025887, #13025891, #13025907, … |
| maximal quotient of | C2×D8×#170, C2×#10603936, C2×#10604060, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19505);