Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 2 |
| isoclinism | isoclinic class of #16260 |
| automorphism | Aut(G) order 131072 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C26×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, commutator, Frattini, socle, cosocle | C24 | C24 |
| prime radical | C2×#392 | C2 |
| LCS | G ▷ C24 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ G | |
| LECS | G ▷ C24 ▷ C1 | |
1089 conjugacy classes of subgroups; only the 175 normal subgroups are shown.
This group has 1089 conjugacy classes of subgroups — too many to draw. Only its 175 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(2,4)(6,7)(13,14,17,18)(15,19,20,16);(5,6,8,7)(10,12)(14,18)(15,20);(6,7)(9,10)(11,12)(13,15,17,20)(14,16,18,19);(1,2)(3,4)(5,7,8,6)(13,16)(14,15)(17,19)(18,20)Polycyclic presentation:
2^8|a^2=f,b^2=ef,c^2=f,d^2=ef,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 | #142838, #142866, #144938, … |
| maximal normal subgroup of | #142838, #142866, #144938, … |
| maximal quotient of | #155629, #155805, #155923, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 9345);