Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| Fitting | C5×#342 ⋊ C2 |
| Sylow | C5 ⋊ #1343 |
222 conjugacy classes of subgroups; only the 35 normal subgroups are shown.
This group has 222 conjugacy classes of subgroups — too many to draw. Only its 35 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
Polycyclic presentation:
2^7,5|a^2=d,c^2=f,b^a=bc,c^a=ce,e^a=eg,c^b=cf,d^b=def,h^b=h^4,d^c=dg67 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1343, C2×#10597980, #12009474, … |
| maximal normal subgroup of | D5×#1343, C2×#10597980, #12009474, … |
| maximal quotient of | #11985972, #11985978, #11985996, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 62);