Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C8 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Sylow | C5 ⋊ #2982 |
396 conjugacy classes of subgroups; only the 217 normal subgroups are shown.
This group has 396 conjugacy classes of subgroups — too many to draw. Only its 217 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,b^2=e,c^2=e,f^2=g,b^a=be,d^a=de,c^b=ce,h^b=h^4148 conjugacy classes — view the full character table.
| maximal subgroup of | #11993165, #11993168, #11993947, … |
| maximal normal subgroup of | #11993165, #11993168, #11993947, … |
| maximal quotient of | #12098029, #12098030, #12098336, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 13076);