Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C24 |
| direct product | C2×#64900 |
| Fitting | C2×C5×M16 ⋊ C4 |
| Sylow | C5 ⋊ C2×#339 |
488 conjugacy classes of subgroups.
| transitive degree | μt(G) = 80 |
76 conjugacy classes — view the full character table.
| maximal subgroup of | AGL(1,𝔽5)×#339, C4×#64900, #13021586, … |
| maximal normal subgroup of | AGL(1,𝔽5)×#339, C4×#64900, #13021586, … |
| maximal quotient of | C2×#10598583, #13015346, #13015353, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 6837);