Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C28 |
| direct product | C2×#66040 |
| Fitting | C2×C5×#126 ⋊ C2 |
| Sylow | C5 ⋊ C2×#529 |
1232 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
112 conjugacy classes — view the full character table.
| maximal subgroup of | #12065281, #12065295, #12065302, … |
| maximal normal subgroup of | #12065281, #12065295, #12065302, … |
| maximal quotient of | C2×#10605989, C2×#10606668, C2×#10607180, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 20087);