Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2403 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, cosocle | C22×C4 | C24 |
| commutator, socle | C23 | C23×C4 |
| prime radical | C24 | C22×C4 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C22×C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
462 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(1,2,4,3)(5,6)(7,9)(8,10)(11,12)(13,14,17,20,16,18,15,19);(2,3)(5,7,8,11)(6,9,10,12)(14,18)(19,20);(6,10)(9,12);(1,3,4,2)(13,15,16,17)(14,19,18,20)Polycyclic presentation:
2^8|a^2=g,b^2=f,d^2=e,g^2=h,b^a=be,c^a=cf,d^b=deh76 conjugacy classes — view the full character table.
| maximal subgroup of | #99900, #99904, #99908, … |
| maximal normal subgroup of | #99900, #99904, #99908, … |
| maximal quotient of | #225274, #225275, #225276, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 15591);