Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22 |
| direct product | D5×#330 |
| Fitting | C5×#330 ⋊ C2 |
| Sylow | C5 ⋊ C2×#330 |
232 conjugacy classes of subgroups; only the 67 normal subgroups are shown.
This group has 232 conjugacy classes of subgroups — too many to draw. Only its 67 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 | C2×D5×#330, D5×#1524, D5×#1526, … |
| maximal normal subgroup of | C2×D5×#330, D5×#1524, D5×#1526, … |
| maximal quotient of | D5×#1271, #11987270, #11987524, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1235);