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 ⋊ #1973 |
340 conjugacy classes of subgroups; only the 99 normal subgroups are shown.
This group has 340 conjugacy classes of subgroups — too many to draw. Only its 99 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=df,c^2=eg,d^2=g,e^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eg,c^b=cg,h^b=h^4,h^c=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1973, C2×#10600442, #12103150, … |
| maximal normal subgroup of | D5×#1973, C2×#10600442, #12103150, … |
| maximal quotient of | #11998177, #11998211, #11998475, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 2524);