Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| Sylow | C5 ⋊ #1757 |
284 conjugacy classes of subgroups; only the 121 normal subgroups are shown.
This group has 284 conjugacy classes of subgroups — too many to draw. Only its 121 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=e,b^2=f,c^2=e,e^2=g,b^a=bd,f^a=fg,d^b=dg,h^b=h^4124 conjugacy classes — view the full character table.
| maximal subgroup of | #11986306, #11986307, #11986309, … |
| maximal normal subgroup of | #11986306, #11986307, #11986309, … |
| maximal quotient of | #11989828, #11989832, #11989836, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 4886);