Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #12077 |
| automorphism | Aut(G) = C24×#3109 (order 2048) · Inn(G) = #442 · Out(G) = C25 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #442 |
| commutator | C2×C8 | C22×C4 |
| Frattini, cosocle | C22×C8 | C23 |
| prime radical | C2×#135 | C22 |
| LCS | G ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ C2×#97 ◁ G | |
| LECS | G ▷ C22×C8 ▷ C4 ▷ C2 ▷ C1 | |
204 conjugacy classes of subgroups; only the 69 normal subgroups are shown.
This group has 204 conjugacy classes of subgroups — too many to draw. Only its 69 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) = 64 |
A minimal faithful permutation representation — 3 generators on 20 points:
(1,2)(3,4)(6,12,13,19)(7,15,16,14)(8,17)(9,18)(10,20);(2,4)(5,6,10,15,11,13,20,14)(7,9,19,8,16,17,12,18);(5,7)(6,9)(8,15)(10,19)(11,16)(12,20)(13,17)(14,18)Polycyclic presentation:
2^8|a^2=f,b^2=fg,d^2=g,e^2=gh,g^2=h,b^a=bd,c^a=ce,d^a=dg,e^a=egh,g^a=gh,d^b=dg,e^b=egh,f^b=fh,g^b=gh,d^c=dgh,e^c=eg,f^c=fh,g^c=gh40 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#12955, #494334, #494335, … |
| maximal normal subgroup of | C2×#12955, #494334, #494335, … |
| maximal quotient of | #135908, #135909, #135932, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5943);