Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #2992 |
356 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=f,d^2=e,f^2=g,b^a=be,d^a=de,h^a=h^2,c^b=ce,d^b=dg,h^b=h^4,h^d=h^4,h^f=h^458 conjugacy classes — view the full character table.
| maximal subgroup of | #13018957, #13018959, #13018960, … |
| maximal normal subgroup of | #13018957, #13018959, #13018960, … |
| maximal quotient of | #13033956, #13034009, #13034041, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19359);