Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C2 |
No aliases for this group.
| Sylow | C5 ⋊ #1365 |
86 conjugacy classes of subgroups.
| transitive degree | μt(G) = 640 |
Polycyclic presentation:
2^7,5|a^2=d,b^2=eg,c^2=fg,d^2=efg,f^2=g,b^a=bc,c^a=ce,h^a=h^4,c^b=cf,d^b=def,f^b=fg73 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#1365, C2×#10598293, #12010586, … |
| maximal normal subgroup of | D5×#1365, C2×#10598293, #12010586, … |
| maximal quotient of | #11986091, #11986485, #11986960, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 375);