Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
| direct product | D5×#333 |
| Fitting | C5×#333 ⋊ C2 |
| Sylow | C5 ⋊ C2×#333 |
256 conjugacy classes of subgroups; only the 87 normal subgroups are shown.
This group has 256 conjugacy classes of subgroups — too many to draw. Only its 87 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
76 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1405, C2×D5×#333, D5×#1542, … |
| maximal normal subgroup of | D5×#1405, C2×D5×#333, D5×#1542, … |
| maximal quotient of | D5×#1272, #11987280, #11987587, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1355);