Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| Fitting | C5×#339 ⋊ C2 |
| Sylow | C5 ⋊ #2027 |
282 conjugacy classes of subgroups; only the 67 normal subgroups are shown.
This group has 282 conjugacy classes of subgroups — too many to draw. Only its 67 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=d,b^2=d,e^2=g,b^a=bd,c^a=ce,e^a=eg,f^a=fg,c^b=cf,e^b=eg,h^b=h^4,e^c=eg,h^c=h^482 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#2027, C2×#10599556, #12126670, … |
| maximal normal subgroup of | D5×#2027, C2×#10599556, #12126670, … |
| maximal quotient of | #12002269, #12002284, #12002289, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1638);