Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C8 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C5×#431 ⋊ C2 |
| Sylow | C5 ⋊ C8×#41 |
456 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=f,c^2=f,d^2=e,f^2=g,b^a=be,h^c=h^4160 conjugacy classes — view the full character table.
| maximal subgroup of | #11990005, #11990007, #11990012, … |
| maximal normal subgroup of | #11990005, #11990007, #11990012, … |
| maximal quotient of | #12097501, #12097506, C4×#65014, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 13089);