Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| Fitting | C5×#464 ⋊ C2 |
| Sylow | C5 ⋊ #3215 |
400 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=g,b^2=e,f^2=g,b^a=be,c^a=cf,d^a=de,f^a=fg,c^b=ceg,h^b=h^4,f^c=fg,h^d=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#3215, C2×#10612337, #12970615, … |
| maximal normal subgroup of | D5×#3215, C2×#10612337, #12970615, … |
| maximal quotient of | #12108637, #12109027, #12109854, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 14419);