Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| Fitting | C5×#431 ⋊ C2 |
| Sylow | C5 ⋊ #2920 |
484 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=f,c^2=e,f^2=g,b^a=be,d^a=dg,h^d=h^4136 conjugacy classes — view the full character table.
| maximal subgroup of | #11988700, #11988703, #11988706, … |
| maximal normal subgroup of | #11988700, #11988703, #11988706, … |
| maximal quotient of | #12096772, C4×#65015, C4×#65126, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 13095);