Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C26 |
| direct product | C2×#65439 |
| Fitting | C22×C5×D8 ⋊ C2 |
| Sylow | C5 ⋊ C2×#459 |
648 conjugacy classes of subgroups; only the 165 normal subgroups are shown.
This group has 648 conjugacy classes of subgroups — too many to draw. Only its 165 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
94 conjugacy classes — view the full character table.
| maximal subgroup of | C4×#65439, #12105473, #12105546, … |
| maximal normal subgroup of | C4×#65439, #12105473, #12105546, … |
| maximal quotient of | C2×#10601797, C2×#10601893, C2×#10601798, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 17637);