Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #9091 |
| automorphism | Aut(G) order 16384 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #386 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C23×C4 | C23 |
| prime radical | C23×D4 | C22 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C23×C4 ◁ G | |
| LECS | G ▷ C23×C4 ▷ C2 ▷ C1 | |
489 conjugacy classes of subgroups; only the 111 normal subgroups are shown.
This group has 489 conjugacy classes of subgroups — too many to draw. Only its 111 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:
(5,6)(7,15,18,20)(8,11)(9,13)(10,14)(12,17,19,16);(1,2)(3,4)(6,11)(7,16)(8,9)(12,19)(13,14)(17,18);(2,4)(5,7,8,17,10,18,9,16)(6,12,13,20,14,19,11,15)Polycyclic presentation:
2^8|a^2=g,c^2=d,d^2=h,e^2=h,f^2=h,b^a=bd,c^a=ce,d^a=dh,f^a=fh,c^b=cf,d^b=dh,e^b=eh,f^b=fh,g^c=gh46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#11183, #357939, #358176, … |
| maximal normal subgroup of | C2×#11183, #357939, #358176, … |
| maximal quotient of | #118686, #118771, #118777, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 4171);