Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #2668 |
| automorphism | Aut(G) order 131072 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C28 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, Frattini, socle, cosocle | C24 | C24 |
| commutator | C23 | C23×C4 |
| prime radical | C22×#121 | C2 |
| LCS | G ▷ C23 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ G | |
| LECS | G ▷ C24 ▷ C1 | |
1301 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)(5,6,7,8)(13,14,16,17)(15,18,19,20);(10,12)(14,17)(15,19);(1,2)(3,4)(5,6)(7,8)(9,10,11,12)(13,14)(15,18)(16,17)(19,20);(1,2)(3,4)(5,6)(7,8)(13,15)(14,18)(16,19)(17,20)Polycyclic presentation:
2^8|a^2=h,c^2=eg,b^a=be,c^a=cf,d^a=def,c^b=cg,d^b=de64 conjugacy classes — view the full character table.
| maximal subgroup of | #101583, #101591, #101599, … |
| maximal normal subgroup of | #101583, #101591, #101599, … |
| maximal quotient of | #153959, #153973, #154003, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 7405);