Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #1844 |
280 conjugacy classes of subgroups.
| transitive degree | μt(G) = 640 |
Polycyclic presentation:
2^7,5|a^2=f,b^2=d,c^2=e,d^2=g,b^a=bd,c^a=ce,d^a=dg,h^a=h^4172 conjugacy classes — view the full character table.
| maximal subgroup of | #11986472, #11986498, #11986499, … |
| maximal normal subgroup of | #11986472, #11986498, #11986499, … |
| maximal quotient of | #11993038, #11993053, #11993067, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 2639);