Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C8 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Sylow | C5 ⋊ #2988 |
432 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,h^d=h^4,h^f=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | #13020108, #13020110, #13020112, … |
| maximal normal subgroup of | #13020108, #13020110, #13020112, … |
| maximal quotient of | #13033949, #13033950, #13034015, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19247);