Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C26 |
| direct product | C2×#65036 |
| Fitting | C2×C5×#100 ⋊ C2 |
| Sylow | C5 ⋊ C2×#453 |
844 conjugacy classes of subgroups; only the 149 normal subgroups are shown.
This group has 844 conjugacy classes of subgroups — too many to draw. Only its 149 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
76 conjugacy classes — view the full character table.
| maximal subgroup of | #12016601, #12016611, #12018259, … |
| maximal normal subgroup of | #12016601, #12016611, #12018259, … |
| maximal quotient of | C2×#10598899, C2×#10598907, C2×#10598905, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 12511);