Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| isoclinism | isoclinic class of #64945 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C26 |
| direct product | C2×#65518 |
| Sylow | C5 ⋊ C2×#395 |
| subgroup | G/H | |
|---|---|---|
| center | C24 | C22×D5 |
| commutator, cosocle | C23×C5 | C24 |
| Frattini | C23 | C23×D5 |
| Fitting | C23×C5×Q8 | C2 |
| socle, prime radical | C24×C5 | C23 |
| hypercenter | C23×Q8 | D5 |
| hypocenter | C5 | C2×#395 |
| LCS | G ▷ C23×C5 ▷ C5 | |
| UCS | C1 ◁ C24 ◁ C23×Q8 | |
908 conjugacy classes of subgroups; only the 285 normal subgroups are shown.
This group has 908 conjugacy classes of subgroups — too many to draw. Only its 285 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 640 |
124 conjugacy classes — view the full character table.
| maximal subgroup of | #11994291, #11994296, #11999514, … |
| maximal normal subgroup of | #11994291, #11994296, #11999514, … |
| maximal quotient of | C2×#10602359, C2×#10602361, C2×#10602927, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 17877);