Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C29 |
| direct product | C2×#66102 |
| Fitting | C2×C5×#135 ⋊ C2 |
| Sylow | C5 ⋊ C2×#575 |
1484 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
100 conjugacy classes — view the full character table.
| maximal subgroup of | #12014974, #12014977, #12014979, … |
| maximal normal subgroup of | #12014974, #12014977, #12014979, … |
| maximal quotient of | C2×#10610561, C2×#10610908, C2×#10610550, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 21166);