Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #10260 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C23 | #121 |
| commutator, Frattini, cosocle | C2×C42 | C23 |
| LCS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
193 conjugacy classes of subgroups; only the 73 normal subgroups are shown.
This group has 193 conjugacy classes of subgroups — too many to draw. Only its 73 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 256 |
A minimal faithful permutation representation — 3 generators on 20 points:
(5,6,9,12,8,11,7,10)(13,14)(15,16)(17,19)(18,20);(1,2)(3,4)(13,15,17,20,18,19,16,14);(2,4)(5,6,8,11)(7,12,9,10)(14,15)(16,17)(19,20)Polycyclic presentation:
2^8|a^2=deh,b^2=dg,c^2=gh,d^2=g,e^2=h,f^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eg,f^a=fg,c^b=cf,d^c=dg,e^c=eh,f^c=fg46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#10602, #242412, #242414, … |
| maximal normal subgroup of | C2×#10602, #242412, #242414, … |
| maximal quotient of | #105187, #105190, #105192, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 3590);