Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23×C8 · Schur multiplier (H2) = C25 |
No aliases for this group.
| Fitting | C5×#431 ⋊ C2 |
| Sylow | C5 ⋊ #2972 |
500 conjugacy classes of subgroups; only the 217 normal subgroups are shown.
This group has 500 conjugacy classes of subgroups — too many to draw. Only its 217 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 160 |
Polycyclic presentation:
2^7,5|a^2=f,f^2=g,b^a=be,d^a=de,c^b=ce,h^b=h^4,h^c=h^4148 conjugacy classes — view the full character table.
| maximal subgroup of | #11993160, #11993163, #11993942, … |
| maximal normal subgroup of | #11993160, #11993163, #11993942, … |
| maximal quotient of | #12097971, #12098030, #12098184, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 13099);