Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24×C4 |
| direct product | C2×#65149 |
| Fitting | C2×C5×#106 ⋊ C2 |
| Sylow | C5 ⋊ C2×#427 |
512 conjugacy classes of subgroups; only the 229 normal subgroups are shown.
This group has 512 conjugacy classes of subgroups — too many to draw. Only its 229 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
112 conjugacy classes — view the full character table.
| maximal subgroup of | #12014203, #12014217, #12015860, … |
| maximal normal subgroup of | #12014203, #12014217, #12015860, … |
| maximal quotient of | C2×#10599320, C2×#10599323, #12068308, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 12927);