Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Fitting | C5×H(3,ℤ/4) ⋊ C2 |
| Sylow | C5 ⋊ #2081 |
204 conjugacy classes of subgroups; only the 57 normal subgroups are shown.
This group has 204 conjugacy classes of subgroups — too many to draw. Only its 57 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
Polycyclic presentation:
2^7,5|a^2=e,c^2=d,d^2=g,e^2=g,b^a=bd,c^a=ce,f^a=fg,h^a=h^4,c^b=cf,d^b=dg,e^b=eg,h^b=h^4,e^c=eg,f^c=fg67 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#2081, C2×#10599499, #12128252, … |
| maximal normal subgroup of | D5×#2081, C2×#10599499, #12128252, … |
| maximal quotient of | #12004092, #12004103, #12004109, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1581);