Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #7606 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C2×C22⋊C4 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C2×C42 | C23 |
| prime radical | C2×#532 | C2 |
| LCS | G ▷ C22×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
547 conjugacy classes of subgroups; only the 87 normal subgroups are shown.
This group has 547 conjugacy classes of subgroups — too many to draw. Only its 87 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) = 128 |
A minimal faithful permutation representation — 3 generators on 20 points:
(1,2)(3,4)(5,6,7,10,8,9,11,12)(14,18,19,20);(6,9)(7,11)(13,14)(15,18)(16,20)(17,19);(2,4)(13,15,17,16)(14,18,19,20)Polycyclic presentation:
2^8|a^2=f,c^2=h,d^2=h,f^2=g,b^a=bd,c^a=ce,d^a=dg,d^b=dh,f^b=fgh52 conjugacy classes — view the full character table.
| maximal subgroup of | #94429, #94431, #98598, … |
| maximal normal subgroup of | #94429, #94431, #98598, … |
| maximal quotient of | #96915, #96921, #96923, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 1325);