Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Sylow | C5 ⋊ #2110 |
160 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=d,b^2=e,d^2=f,f^2=g,b^a=bf,e^a=eg,h^a=h^2,c^b=cg,d^b=dg,h^d=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | #13024802, #13024803, #13024805, … |
| maximal normal subgroup of | #13024802, #13024803, #13024805, … |
| maximal quotient of | #13023001, #13023007, #13023054, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 6451);