Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #12316 |
| automorphism | Aut(G) order 4096 |
| homology | Abelianization (H1) = C23 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #447 |
| commutator, Frattini, cosocle | C4×C8 | C23 |
| prime radical | #3283 | C2 |
| LCS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C42 ◁ C8×D4 ◁ G | |
| LECS | G ▷ C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
175 conjugacy classes of subgroups; only the 43 normal subgroups are shown.
This group has 175 conjugacy classes of subgroups — too many to draw. Only its 43 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 3 generators on 40 points:
(1,2,5,8)(3,6,4,7)(9,10,15,19)(11,20,23,39)(12,17,14,29)(13,25,28,37)(16,31,34,22)(18,24,36,27)(21,38,30,35)(26,32,40,33);(2,6)(3,4)(7,8)(9,11,15,23)(10,16,19,34)(12,21,14,30)(13,26,28,40)(17,32,29,33)(18,35,36,38)(20,37,39,25)(22,24,31,27);(2,7)(3,4)(6,8)(9,12,15,14)(10,17,19,29)(11,21,23,30)(13,24,28,27)(16,32,34,33)(18,25,36,37)(20,38,39,35)(22,26,31,40)Polycyclic presentation:
2^8|a^2=gh,b^2=h,c^2=h,d^2=fh,e^2=g,f^2=h,b^a=bd,c^a=ce,d^a=df,e^a=eg,f^a=fh,d^b=df,e^b=eg,f^b=fh,d^c=dg,e^c=eg40 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#12375, #488944, #488948, … |
| maximal normal subgroup of | C2×#12375, #488944, #488948, … |
| maximal quotient of | #125877, #125917, #126036, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5363);