Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C26 |
No aliases for this group.
| Sylow | C5 ⋊ #2880 |
774 conjugacy classes of subgroups; only the 204 normal subgroups are shown.
This group has 774 conjugacy classes of subgroups — too many to draw. Only its 204 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=f,f^2=g,b^a=be,h^a=h^2,h^b=h^4,d^c=dg,h^c=h^4,h^d=h^4,h^f=h^470 conjugacy classes — view the full character table.
| maximal subgroup of | #13020173, #13020175, #13020181, … |
| maximal normal subgroup of | #13020173, #13020175, #13020181, … |
| maximal quotient of | #13029545, #13029553, #13029559, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19625);