Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| Sylow | C5 ⋊ #2067 |
284 conjugacy classes of subgroups; only the 87 normal subgroups are shown.
This group has 284 conjugacy classes of subgroups — too many to draw. Only its 87 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| transitive degree | μt(G) = 320 |
Polycyclic presentation:
2^7,5|a^2=d,b^2=de,e^2=g,f^2=g,b^a=bdeg,c^a=ce,e^a=eg,f^a=fg,c^b=cf,h^b=h^4,e^c=eg,f^c=fg88 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#2067, C2×#10600987, #12127910, … |
| maximal normal subgroup of | D5×#2067, C2×#10600987, #12127910, … |
| maximal quotient of | #12003817, #12003824, #12003841, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 3069);