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 | #2416 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ G | |
| LECS | G ▷ C23 ▷ C1 | |
1159 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 5 generators on 20 points:
(5,6,10,9)(7,12,11,8)(13,14,17,16)(15,19,20,18);(2,4)(5,7)(6,8)(9,12)(10,11)(13,15,17,20)(14,18,16,19);(1,2)(3,4)(5,8,10,12)(6,11,9,7)(13,14,17,16)(15,18,20,19);(2,4)(5,9,10,6)(7,12,11,8)(13,16,17,14)(15,19,20,18);(1,2)(3,4)Polycyclic presentation:
2^8|a^2=f,b^2=fg,c^2=f,d^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 | #219927, #219940, #219948, … |
| maximal normal subgroup of | #219927, #219940, #219948, … |
| maximal quotient of | #519037, #519082, #519118, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 29100);