Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C4 |
No aliases for this group.
| Sylow | C5 ⋊ #1694 |
152 conjugacy classes of subgroups; only the 57 normal subgroups are shown.
This group has 152 conjugacy classes of subgroups — too many to draw. Only its 57 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 640 |
Polycyclic presentation:
2^7,5|a^2=g,b^2=df,c^2=g,d^2=f,e^2=g,b^a=bd,c^a=ce,d^a=df,e^a=eg,h^a=h^4,c^b=cf,e^c=eg79 conjugacy classes — view the full character table.
| maximal subgroup of | #12013234, #12013236, #12013241, … |
| maximal normal subgroup of | #12013234, #12013236, #12013241, … |
| maximal quotient of | #11992399, #11995516, #11997704, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 3839);