Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C5×#135 ⋊ C4 |
| Sylow | C5 ⋊ #2957 |
452 conjugacy classes of subgroups.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=f,c^2=f,e^2=g,f^2=g,b^a=be,d^a=dg,e^a=eg,h^a=h^2,e^b=eg,d^c=dg,h^c=h^3,h^d=h^4,h^f=h^458 conjugacy classes — view the full character table.
| maximal subgroup of | #13026722, #13026723, #13026882, … |
| maximal normal subgroup of | #13026722, #13026723, #13026882, … |
| maximal quotient of | #13031617, #13031620, #13031628, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19526);