Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Fitting | C5×#333 ⋊ C2 |
| Sylow | C5 ⋊ #1559 |
202 conjugacy classes of subgroups; only the 65 normal subgroups are shown.
This group has 202 conjugacy classes of subgroups — too many to draw. Only its 65 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=g,c^2=f,d^2=g,e^2=fg,b^a=bd,c^a=cg,d^a=df,d^b=dg,e^b=efg,h^c=h^464 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1559, C2×#10599281, #12067844, … |
| maximal normal subgroup of | D5×#1559, C2×#10599281, #12067844, … |
| maximal quotient of | #11987390, #11987409, #11987536, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 1363);