Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D42 |
| automorphism | Aut(G) order 65536 |
| homology | Abelianization (H1) = C22×C42 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, cosocle | C22×C4 | C24 |
| commutator | C22 | C22×C42 |
| socle, prime radical | C23 | C23×C4 |
| LCS | G ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
469 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 256 |
A minimal faithful permutation representation — 4 generators on 20 points:
(5,6)(7,11)(8,12)(9,10)(13,14,16,19,17,15,18,20);(1,2,4,3)(6,10)(11,12);(1,3,4,2)(5,7,9,8)(6,11,10,12)(14,15)(19,20);(5,8,9,7)(6,12,10,11)(13,15,16,20,17,14,18,19)Polycyclic presentation:
2^8|a^2=f,b^2=g,c^2=eg,d^2=ef,f^2=h,b^a=be,c^a=ch,d^c=dh100 conjugacy classes — view the full character table.
| maximal subgroup of | #100462, #100466, #100470, … |
| maximal normal subgroup of | #100462, #100466, #100470, … |
| maximal quotient of | #184373, #184388, #184392, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 13508);