Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #11508 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | C2×#99 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C22×Q8 | C23 |
| prime radical | C22×D4 | C2×C4 |
| LCS | G ▷ C22×C4 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ C2×C4×Q8 ◁ G | |
| LECS | G ▷ C22×Q8 ▷ C22 ▷ C2 ▷ C1 | |
240 conjugacy classes of subgroups; only the 65 normal subgroups are shown.
This group has 240 conjugacy classes of subgroups — too many to draw. Only its 65 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) = 64 |
A minimal faithful permutation representation — 3 generators on 20 points:
(2,4)(5,6,10,11,8,13,7,15)(9,12,16,19,17,14,18,20);(1,2,3,4)(5,7,8,10)(6,11,13,15)(9,16,17,18)(12,20,14,19);(6,12)(7,10)(9,17)(11,19)(13,14)(15,20)Polycyclic presentation:
2^8|a^2=f,b^2=d,e^2=h,f^2=h,b^a=bd,c^a=ce,e^a=eg,g^a=gh,c^b=ch,e^c=eh,f^c=fgh,f^e=fh34 conjugacy classes — view the full character table.
| maximal subgroup of | #130276, #130278, #130338, … |
| maximal normal subgroup of | #130276, #130278, #130338, … |
| maximal quotient of | #134232, #134256, #134286, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5791);