Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #2986 |
330 conjugacy classes of subgroups; only the 148 normal subgroups are shown.
This group has 330 conjugacy classes of subgroups — too many to draw. Only its 148 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=f,b^2=e,c^2=e,f^2=g,b^a=be,d^a=de,h^a=h^2,c^b=ceg,d^b=dg,h^d=h^4,h^f=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | #13020377, #13020379, #13020381, … |
| maximal normal subgroup of | #13020377, #13020379, #13020381, … |
| maximal quotient of | #13033930, #13033938, #13034092, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19419);