Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C8 · Schur multiplier (H2) = C2 |
No aliases for this group.
| Sylow | C5 ⋊ #1332 |
98 conjugacy classes of subgroups.
| transitive degree | μt(G) = 640 |
Polycyclic presentation:
2^7,5|a^2=d,b^2=g,c^2=eg,d^2=f,e^2=g,b^a=bc,c^a=ce,e^a=eg,c^b=ce,e^b=eg,h^b=h^4100 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1332, C2×#10597963, #12009037, … |
| maximal normal subgroup of | D5×#1332, C2×#10597963, #12009037, … |
| maximal quotient of | #11985951, #11985963, #11986069, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 45);