Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Fitting | C2×C5×C16 ⋊ C4 |
| Sylow | C5 ⋊ #2155 |
144 conjugacy classes of subgroups; only the 62 normal subgroups are shown.
This group has 144 conjugacy classes of subgroups — too many to draw. Only its 62 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=e,b^2=d,c^2=g,d^2=f,f^2=g,b^a=bd,d^a=df,f^a=fg,h^a=h^2,e^b=eg,h^e=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | #13026022, #13026023, #13026056, … |
| maximal normal subgroup of | #13026022, #13026023, #13026056, … |
| maximal quotient of | #13025041, #13025043, #13025045, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 6186);