Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Sylow | C5 ⋊ #3127 |
358 conjugacy classes of subgroups; only the 125 normal subgroups are shown.
This group has 358 conjugacy classes of subgroups — too many to draw. Only its 125 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,c^2=g,d^2=eg,f^2=g,b^a=be,c^a=cf,f^a=fg,h^a=h^4,d^b=dg,f^c=fg100 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#3127, C2×#10614286, #12967665, … |
| maximal normal subgroup of | D5×#3127, C2×#10614286, #12967665, … |
| maximal quotient of | #12099400, #12102406, #12102502, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 16368);