Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #1753 |
348 conjugacy classes of subgroups; only the 112 normal subgroups are shown.
This group has 348 conjugacy classes of subgroups — too many to draw. Only its 112 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,b^2=f,c^2=e,e^2=g,b^a=bd,c^a=cg,h^a=h^2,h^c=h^3,h^e=h^476 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#10604227, #13033293, #13033301, … |
| maximal normal subgroup of | C2×#10604227, #13033293, #13033301, … |
| maximal quotient of | #13016713, #13016717, #13016723, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 6309);