Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #1347 |
| automorphism | Aut(G) order 4096 |
| homology | Abelianization (H1) = C42 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | #102 |
| commutator | C2×C8 | C42 |
| Frattini, cosocle | C23×C8 | C22 |
| socle | C22 | #340 |
| prime radical | C24 | Q16 |
| LCS | G ▷ C2×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C23×C4 ◁ C23×C8 ◁ G | |
| LECS | G ▷ C23×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
160 conjugacy classes of subgroups; only the 53 normal subgroups are shown.
This group has 160 conjugacy classes of subgroups — too many to draw. Only its 53 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) = 64 |
A minimal faithful permutation representation — 2 generators on 40 points:
(1,2)(3,5)(4,7)(6,8)(9,10,13,18,15,19,14,29)(11,20,22,36,23,37,30,34)(12,24,26,35,28,39,27,17)(16,25,31,38,33,40,32,21);(2,5,7,6)(9,11,13,22,15,23,14,30)(10,16,18,31,19,33,29,32)(12,25,26,38,28,40,27,21)(17,34,24,20,35,36,39,37)Polycyclic presentation:
2^8|a^2=d,b^2=e,c^2=fh,d^2=h,e^2=h,f^2=h,g^2=h,b^a=bc,c^a=cf,e^a=efgh,f^a=fh,g^a=gh,c^b=cg,f^b=fh,g^b=gh58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7261, #127520, #127551, … |
| maximal normal subgroup of | C2×#7261, #127520, #127551, … |
| maximal quotient of | #93036, #93037, #93040, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 249);