Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| Fitting | C4×C5×SD16 ⋊ C2 |
| Sylow | C5 ⋊ #3173 |
362 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,d^b=dg,h^b=h^488 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#3173, C2×#10611397, #12969148, … |
| maximal normal subgroup of | D5×#3173, C2×#10611397, #12969148, … |
| maximal quotient of | #12099859, #12103559, #12103565, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 13479);