Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Fitting | C5×D42 ⋊ C2 |
| Sylow | C5 ⋊ #2196 |
354 conjugacy classes of subgroups; only the 45 normal subgroups are shown.
This group has 354 conjugacy classes of subgroups — too many to draw. Only its 45 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 40 |
Polycyclic presentation:
2^7,5|b^a=bd,c^a=ce,f^a=fg,h^a=h^4,e^b=efg,d^c=df,e^d=eg70 conjugacy classes — view the full character table.
| maximal subgroup of | #12020009, #12020010, #12020014, … |
| maximal normal subgroup of | #12020009, #12020010, #12020014, … |
| maximal quotient of | #12011329, #12011363, #12011500, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 4784);