Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C42 · Schur multiplier (H2) = C2×C4 |
No aliases for this group.
| Fitting | C5×C4⋊C8 ⋊ C4 |
| Sylow | C5 ⋊ #1286 |
156 conjugacy classes of subgroups; only the 52 normal subgroups are shown.
This group has 156 conjugacy classes of subgroups — too many to draw. Only its 52 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=d,b^2=e,c^2=fg,e^2=f,b^a=bc,c^a=cf,e^a=efg,h^a=h^2,d^b=dg,h^b=h^3,h^d=h^4,h^e=h^452 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#10598595, #13015786, #13015791, … |
| maximal normal subgroup of | C2×#10598595, #13015786, #13015791, … |
| maximal quotient of | #13013213, #13013224, #13013228, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 677);