Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C42 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Sylow | C5 ⋊ #1301 |
148 conjugacy classes of subgroups; only the 77 normal subgroups are shown.
This group has 148 conjugacy classes of subgroups — too many to draw. Only its 77 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=d,b^2=e,c^2=f,d^2=g,e^2=f,b^a=bc,c^a=cf,e^a=efg,c^b=cg,h^b=h^494 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1301, C2×#10598205, #11989526, … |
| maximal normal subgroup of | D5×#1301, C2×#10598205, #11989526, … |
| maximal quotient of | #11985855, #11985861, #11985867, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 287);