Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of D4×#120 |
| automorphism | Aut(G) order 65536 |
| homology | Abelianization (H1) = C25 · Schur multiplier (H2) = C28 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C23 | C25 |
| prime radical | #2414 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1149 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(5,6,9,12)(7,8,11,10)(13,14,17,16)(15,19,20,18);(2,4)(5,7,9,11)(6,10,12,8)(13,15,17,20)(14,18,16,19);(1,2)(3,4)(5,6)(7,10)(8,11)(9,12);(2,4)(13,14,17,16)(15,18,20,19);(1,2)(3,4)(5,8,9,10)(6,11,12,7)(13,16,17,14)(15,19,20,18)Polycyclic presentation:
2^8|a^2=f,b^2=f,d^2=fg,e^2=f,b^a=bf,c^a=cg,c^b=ch,e^b=eh,d^c=dh,e^d=eh70 conjugacy classes — view the full character table.
| maximal subgroup of | #219934, #219945, #219954, … |
| maximal normal subgroup of | #219934, #219945, #219954, … |
| maximal quotient of | #519204, #519209, #519253, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 29130);