Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #2971 |
402 conjugacy classes of subgroups; only the 160 normal subgroups are shown.
This group has 402 conjugacy classes of subgroups — too many to draw. Only its 160 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=f,c^2=f,d^2=e,f^2=g,b^a=be,c^a=cg,d^a=dg,h^a=h^2,c^b=cg,d^c=dg,h^c=h^3,h^f=h^470 conjugacy classes — view the full character table.
| maximal subgroup of | #13019729, #13019731, #13019737, … |
| maximal normal subgroup of | #13019729, #13019731, #13019737, … |
| maximal quotient of | #13033700, #13033702, #13033772, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19240);