Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C26 |
No aliases for this group.
| Fitting | C5×H(5,𝔽2) ⋊ C4 |
| Sylow | C5 ⋊ #1790 |
670 conjugacy classes of subgroups; only the 84 normal subgroups are shown.
This group has 670 conjugacy classes of subgroups — too many to draw. Only its 84 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|a^2=f,b^a=bd,c^a=ce,d^a=dg,h^a=h^2,e^b=eg,f^b=fg,d^c=dg,h^f=h^449 conjugacy classes — view the full character table.
| maximal subgroup of | #13026900, #13026901, #13026902, … |
| maximal normal subgroup of | #13026900, #13026901, #13026902, … |
| maximal quotient of | #13017462, #13017463, #13017464, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 7099);