Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| Fitting | C5×#367 ⋊ C2 |
| Sylow | C5 ⋊ #2177 |
172 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=e,c^2=eg,d^2=fg,f^2=g,b^a=bd,c^a=cg,d^a=df,f^a=fg,d^b=df,f^b=fg,h^b=h^4,h^c=h^476 conjugacy classes — view the full character table.
| maximal subgroup of | #12019922, #12019924, D5×#2177, … |
| maximal normal subgroup of | #12019922, #12019924, D5×#2177, … |
| maximal quotient of | #12011050, #12011222, #12011307, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 2214);