Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Fitting | C5×#541 ⋊ C2 |
| Sylow | C5 ⋊ #3178 |
350 conjugacy classes of subgroups.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|c^2=f,d^2=e,f^2=g,b^a=be,c^a=cf,f^a=fg,h^a=h^4,c^b=cg,d^b=dg,h^c=h^476 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#3178, C2×#10615176, #12969192, … |
| maximal normal subgroup of | D5×#3178, C2×#10615176, #12969192, … |
| maximal quotient of | #12099875, #12103584, #12103600, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 17258);