Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Fitting | C5×#330 ⋊ C2 |
| Sylow | C5 ⋊ #1528 |
212 conjugacy classes of subgroups; only the 61 normal subgroups are shown.
This group has 212 conjugacy classes of subgroups — too many to draw. Only its 61 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=e,b^2=f,d^2=g,e^2=f,b^a=bd,c^a=cf,d^a=df,d^b=dg,e^b=efg,h^c=h^470 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1528, C2×#10599156, #12067216, … |
| maximal normal subgroup of | D5×#1528, C2×#10599156, #12067216, … |
| maximal quotient of | #11987287, #11987300, #11987344, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1238);