Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C8 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Fitting | C22×C5×C16 ⋊ C2 |
| Sylow | C5 ⋊ #2168 |
164 conjugacy classes of subgroups; only the 73 normal subgroups are shown.
This group has 164 conjugacy classes of subgroups — too many to draw. Only its 73 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=e,c^2=e,e^2=f,f^2=g,b^a=bd,c^a=cg,h^a=h^4184 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#2168, C2×#10602200, #12252468, … |
| maximal normal subgroup of | D5×#2168, C2×#10602200, #12252468, … |
| maximal quotient of | #12011010, #12011071, #12011080, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 4282);