Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #1809 |
316 conjugacy classes of subgroups; only the 109 normal subgroups are shown.
This group has 316 conjugacy classes of subgroups — too many to draw. Only its 109 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=d,d^2=g,b^a=bd,c^a=ce,d^a=dg,c^b=cg,h^b=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1809, C2×#10600306, #12098875, … |
| maximal normal subgroup of | D5×#1809, C2×#10600306, #12098875, … |
| maximal quotient of | #11992141, #11992154, #11992200, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 2388);