Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #447 |
| automorphism | Aut(G) = C22×#41×#120 (order 2048) · Inn(G) = C2×D4 · Out(G) = C24×D4 |
| homology | Abelianization (H1) = C22×C8 · Schur multiplier (H2) = C22 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C8 | C2×D4 |
| commutator | C2×C4 | C22×C8 |
| Frattini, cosocle | C22×C8 | C23 |
| socle | C22 | C2×C4⋊C8 |
| prime radical | C23 | C2×M16 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C2×C8 ◁ C2×C4×C8 ◁ G | |
| LECS | G ▷ C22×C8 ▷ C4 ▷ C2 ▷ C1 | |
159 conjugacy classes of subgroups; only the 85 normal subgroups are shown.
This group has 159 conjugacy classes of subgroups — too many to draw. Only its 85 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:
(2,4)(5,6,9,7,8,12,17,15,10,13,19,16,18,11,20,14);(5,7,9,12,8,15,17,13,10,16,19,11,18,14,20,6);(1,2,3,4)Polycyclic presentation:
2^8|a^2=f,b^2=f,c^2=e,d^2=h,f^2=g,g^2=h,b^a=bd,c^a=ce,d^a=dh,d^b=dh76 conjugacy classes — view the full character table.
| maximal subgroup of | #135878, #135880, #135896, … |
| maximal normal subgroup of | #135878, #135880, #135896, … |
| maximal quotient of | #140337, #140340, #140352, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 6151);