Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #3241 |
332 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|b^2=e,c^2=e,f^2=g,b^a=be,c^a=cf,d^a=de,f^a=fg,c^b=ce,d^b=dg,f^c=fg,h^c=h^470 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#3241, C2×#10615161, #12971545, … |
| maximal normal subgroup of | D5×#3241, C2×#10615161, #12971545, … |
| maximal quotient of | #12108845, #12109086, #12109905, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 17243);