Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #2326 |
612 conjugacy classes of subgroups; only the 237 normal subgroups are shown.
This group has 612 conjugacy classes of subgroups — too many to draw. Only its 237 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=g,b^2=g,c^2=f,d^2=e,b^a=be,c^a=cf,d^a=de,h^a=h^4,c^b=ce,h^b=h^4100 conjugacy classes — view the full character table.
| maximal subgroup of | #12014472, #12014492, #12015293, … |
| maximal normal subgroup of | #12014472, #12014492, #12015293, … |
| maximal quotient of | #12020563, #12020605, #12020612, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 16766);