Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C8 · Schur multiplier (H2) = C22 |
No aliases for this group.
| Sylow | C5 ⋊ #1324 |
118 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=d,b^2=e,c^2=g,d^2=f,b^a=bc,c^a=ce,e^a=eg,h^a=h^4,d^b=deg,d^c=dg82 conjugacy classes — view the full character table.
| maximal subgroup of | #11986678, #11986679, #11986680, … |
| maximal normal subgroup of | #11986678, #11986679, #11986680, … |
| maximal quotient of | #11985935, #11985942, #11986094, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 205);