Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C8 · Schur multiplier (H2) = C25 |
| direct product | #41×#170 |
| Sylow | C5 ⋊ C8×#41 |
456 conjugacy classes of subgroups; only the 250 normal subgroups are shown.
This group has 456 conjugacy classes of subgroups — too many to draw. Only its 250 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 | #104×#170, #13016913, #13016919, … |
| maximal normal subgroup of | #104×#170, #13016913, #13016919, … |
| maximal quotient of | #117×#170, C4×D4×#170, C4×Q8×#170, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19626);