Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Fitting | C5×#342 ⋊ C2 |
| Sylow | C5 ⋊ #1819 |
504 conjugacy classes of subgroups; only the 81 normal subgroups are shown.
This group has 504 conjugacy classes of subgroups — too many to draw. Only its 81 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
Polycyclic presentation:
2^7,5|a^2=f,c^2=d,b^a=bd,c^a=ce,e^a=eg,h^b=h^4,f^c=fg76 conjugacy classes — view the full character table.
| maximal subgroup of | #12009954, #12009958, #12009967, … |
| maximal normal subgroup of | #12009954, #12009958, #12009967, … |
| maximal quotient of | #11992622, #11992628, #11992634, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1844);