Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #447 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C26 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C24 | C2×D4 |
| commutator | C2×C4 | C2×C42 |
| Frattini, cosocle | C23×C4 | C23 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C23×C4 ▷ C2 ▷ C1 | |
685 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 256 |
A minimal faithful permutation representation — 3 generators on 20 points:
(1,2)(3,4)(5,6,7,8)(14,18)(15,19)(16,20);(2,4)(9,10,11,12)(13,14,17,15)(16,19,20,18);(13,15,17,14)(16,18,20,19)Polycyclic presentation:
2^8|a^2=f,b^2=g,c^2=h,d^2=h,e^2=h,b^a=bd,c^a=ce,d^a=dh,e^a=eh,d^b=dh,e^b=eh,d^c=dh,e^c=eh76 conjugacy classes — view the full character table.
| maximal subgroup of | #98188, #98190, #98196, … |
| maximal normal subgroup of | #98188, #98190, #98196, … |
| maximal quotient of | #105669, #105671, #105675, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 3777);