Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #11541 |
| automorphism | Aut(G) order 4096 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | C2×#99 |
| commutator | C24 | C22×C4 |
| Frattini, cosocle | C22×D4 | C23 |
| prime radical | C2×#120 | C22 |
| LCS | G ▷ C24 ▷ C22 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×D4 ▷ C22 ▷ C2 ▷ C1 | |
312 conjugacy classes of subgroups; only the 61 normal subgroups are shown.
This group has 312 conjugacy classes of subgroups — too many to draw. Only its 61 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) = 32 |
A minimal faithful permutation representation — 3 generators on 20 points:
(2,4)(5,6)(7,13,16,20)(8,17,14,12)(9,11)(10,15)(18,19);(5,7,14,15,9,16,8,18)(6,10,17,20,11,19,12,13);(1,2,3,4)(6,11)(10,19)(12,17)(13,20)Polycyclic presentation:
2^8|a^2=f,b^2=df,c^2=eh,b^a=bd,c^a=ce,d^a=dg,g^a=gh,d^b=dg,f^b=fg,g^b=gh,f^d=fh37 conjugacy classes — view the full character table.
| maximal subgroup of | #132249, #132250, #132251, … |
| maximal normal subgroup of | #132249, #132250, #132251, … |
| maximal quotient of | #140611, #140632, #140649, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 6207);