Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| Fitting | C5×#117 ⋊ C4 |
| Sylow | C5 ⋊ #1736 |
448 conjugacy classes of subgroups; only the 138 normal subgroups are shown.
This group has 448 conjugacy classes of subgroups — too many to draw. Only its 138 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
Polycyclic presentation:
2^7,5|a^2=e,b^2=f,d^2=g,f^2=g,b^a=bd,d^a=dg,f^a=fg,h^a=h^2,c^b=cg,h^b=h^3,h^e=h^4,h^f=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | #13021732, #13021754, #13021757, … |
| maximal normal subgroup of | #13021732, #13021754, #13021757, … |
| maximal quotient of | #13015382, #13015392, #13015404, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 6461);