Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1595 |
| automorphism | Aut(G) = C27×#120 (order 4096) · Inn(G) = #120 · Out(G) = C27 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | #120 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C23×C4 | C23 |
| prime radical | C24 | C2×D4 |
| LCS | G ▷ C22×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C23×C4 ◁ G | |
| LECS | G ▷ C23×C4 ▷ C22 ▷ C1 | |
287 conjugacy classes of subgroups; only the 77 normal subgroups are shown.
This group has 287 conjugacy classes of subgroups — too many to draw. Only its 77 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:
(1,2,4,3)(9,12)(14,19)(15,20)(16,17);(1,3,4,2)(5,6)(7,9)(8,10)(11,12)(13,14)(15,16)(17,19)(18,20);(5,7)(6,9)(8,11)(10,12)(13,15,18,19)(14,16,20,17)Polycyclic presentation:
2^8|a^2=f,b^2=f,c^2=g,d^2=g,e^2=g,b^a=bd,c^a=ce,d^a=dg,e^a=eg,d^b=dg,e^b=eh,d^c=dh,e^c=eg46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#8867, #192298, #192305, … |
| maximal normal subgroup of | C2×#8867, #192298, #192305, … |
| maximal quotient of | #99359, #99370, #99374, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 1855);