Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #16249 |
| automorphism | Aut(G) order 65536 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C24 | C24 |
| prime radical | C25 | C23 |
| LCS | G ▷ C24 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ G | |
| LECS | G ▷ C24 ▷ C1 | |
729 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(2,4)(6,7)(13,14,16,19)(15,18,20,17);(9,10,11,12)(13,15)(14,17)(16,20)(18,19);(5,6,8,7)(9,10)(11,12)(13,15)(14,18)(16,20)(17,19);(1,2)(3,4)(5,7,8,6)(13,14)(15,17)(16,19)(18,20)Polycyclic presentation:
2^8|a^2=e,b^2=g,c^2=f,d^2=f,b^a=be,c^a=cf,d^a=dh,c^b=cg,d^c=de52 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#16550, #611108, #611115, … |
| maximal normal subgroup of | C2×#16550, #611108, #611115, … |
| maximal quotient of | #155663, #155733, #155763, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 9538);