Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C26 |
No aliases for this group.
| Fitting | C5×#127 ⋊ C4 |
| Sylow | C5 ⋊ #2380 |
648 conjugacy classes of subgroups; only the 152 normal subgroups are shown.
This group has 648 conjugacy classes of subgroups — too many to draw. Only its 152 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 80 |
Polycyclic presentation:
2^7,5|a^2=g,c^2=ef,d^2=e,b^a=be,c^a=cf,d^a=def,h^a=h^2,c^b=cef,d^b=de,h^g=h^452 conjugacy classes — view the full character table.
| maximal subgroup of | #13020358, #13020362, #13020363, … |
| maximal normal subgroup of | #13020358, #13020362, #13020363, … |
| maximal quotient of | #13028054, #13028058, #13028606, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 19452);