Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C16 · Schur multiplier (H2) = C2 |
No aliases for this group.
| Sylow | C5 ⋊ #1400 |
74 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=d,d^2=e,e^2=f,f^2=g,b^a=bc,c^a=cg,h^a=h^2,d^b=dg,h^b=h^4,h^d=h^476 conjugacy classes — view the full character table.
| maximal subgroup of | #13014279, #13014280, #13014281, … |
| maximal normal subgroup of | #13014279, #13014280, #13014281, … |
| maximal quotient of | #13014084, #13014144, #13014182, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 739);