Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
| direct product | C2×#65337 |
| Fitting | C2×C5×C22⋊Q8 ⋊ C2 |
| Sylow | C5 ⋊ C2×#465 |
564 conjugacy classes of subgroups; only the 173 normal subgroups are shown.
This group has 564 conjugacy classes of subgroups — too many to draw. Only its 173 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
100 conjugacy classes — view the full character table.
| maximal subgroup of | #11998806, #11998812, #11998833, … |
| maximal normal subgroup of | #11998806, #11998812, #11998833, … |
| maximal quotient of | C2×#10601893, C2×#10601925, C2×#10601927, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 16541);