Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #33830 |
| automorphism | Aut(G) = C26×#442 (order 4096) · Inn(G) = C22×D8 · Out(G) = C24×C4 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | C22×D8 |
| commutator, Frattini, cosocle | C2×C8 | C24 |
| prime radical | #493 | C22 |
| LCS | G ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C4×Q8 ◁ C8×Q8 ◁ G | |
| LECS | G ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
240 conjugacy classes of subgroups; only the 99 normal subgroups are shown.
This group has 240 conjugacy classes of subgroups — too many to draw. Only its 99 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 — 4 generators on 40 points:
(2,5)(6,7)(9,10)(11,20)(12,17)(13,25)(14,29)(15,19)(16,23)(18,27)(21,36)(22,38)(24,35)(26,32)(28,37)(30,34)(31,39)(33,40);(1,2,4,5)(3,7,8,6)(11,21)(16,31)(20,36)(22,30)(23,39)(26,40)(32,33)(34,38);(9,11,15,21)(10,16,19,31)(12,22,14,30)(13,26,28,40)(17,32,29,33)(18,34,35,38)(20,37,36,25)(23,24,39,27);(1,3,4,8)(2,6,5,7)(9,12,15,14)(10,17,19,29)(11,22,21,30)(13,24,28,27)(16,32,31,33)(18,25,35,37)(20,38,36,34)(23,26,39,40)Polycyclic presentation:
2^8|b^2=e,c^2=h,d^2=eh,f^2=gh,g^2=h,b^a=be,c^a=cf,f^a=fg,g^a=gh,c^b=ch,d^b=de,f^c=fg,g^c=gh43 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#33938, #7623875, #7623879, … |
| maximal normal subgroup of | C2×#33938, #7623875, #7623879, … |
| maximal quotient of | #497617, #497673, #497958, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 26926);