Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Sylow | C5 ⋊ #1494 |
230 conjugacy classes of subgroups; only the 64 normal subgroups are shown.
This group has 230 conjugacy classes of subgroups — too many to draw. Only its 64 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=f,d^2=f,e^2=g,b^a=bd,c^a=cg,d^a=df,h^a=h^2,c^b=cg,d^b=df,h^b=h^4,h^e=h^458 conjugacy classes — view the full character table.
| maximal subgroup of | #13017553, #13017554, #13017556, … |
| maximal normal subgroup of | #13017553, #13017554, #13017556, … |
| maximal quotient of | #13014950, #13014954, #13014958, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 6596);