Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of H(5,𝔽2) |
| automorphism | Aut(G) order 131072 |
| homology | Abelianization (H1) = C22×C4×C8 · Schur multiplier (H2) = C24×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, cosocle | C22×C4 | C24 |
| commutator | C2 | C22×C4×C8 |
| socle | C23 | C23×C4 |
| prime radical | C24 | C22×C4 |
| LCS | G ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
545 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(1,2,3,4)(5,6)(7,10)(8,9)(11,12)(13,14,16,19,18,20,17,15);(6,9)(7,11)(13,15,17,20,18,19,16,14);(5,7,8,11)(6,10,9,12);(6,9)(10,12)Polycyclic presentation:
2^8|a^2=f,b^2=g,c^2=e,f^2=h,g^2=h,b^a=be,d^a=de,c^b=ce136 conjugacy classes — view the full character table.
| maximal subgroup of | #108560, #108754, #108760, … |
| maximal normal subgroup of | #108560, #108754, #108760, … |
| maximal quotient of | #184464, #184484, #184485, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 13531);