Finite Group DatabasebetaFinite Group Databasebeta| order | 640 |
| automorphism | ? |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C23 |
No aliases for this group.
| Fitting | C5×B(4,𝔽2) ⋊ C2 |
| Sylow | C5 ⋊ #2200 |
260 conjugacy classes of subgroups; only the 41 normal subgroups are shown.
This group has 260 conjugacy classes of subgroups — too many to draw. Only its 41 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|b^2=g,b^a=bd,c^a=ce,f^a=fg,c^b=cg,e^b=efg,h^b=h^4,d^c=df,e^d=eg49 conjugacy classes — view the full character table.
| maximal subgroup of | D5×#2200, C2×#10601792, #12253346, … |
| maximal normal subgroup of | D5×#2200, C2×#10601792, #12253346, … |
| maximal quotient of | #12011345, #12011351, #12011378, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(640, 3874);