Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of #2212 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #459 |
| commutator | C2×C8 | C22×C4 |
| Frattini, cosocle | C22×C8 | C23 |
| prime radical | C2×#135 | C22 |
| LCS | G ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C22×C4 ◁ C2×C4×C8 ◁ G | |
| LECS | G ▷ C22×C8 ▷ C4 ▷ C2 ▷ C1 | |
215 conjugacy classes of subgroups; only the 79 normal subgroups are shown.
This group has 215 conjugacy classes of subgroups — too many to draw. Only its 79 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:
(1,2,3,4)(6,9)(7,12)(8,10)(13,14)(15,20)(16,19)(17,18);(5,6,10,13,11,14,8,9)(7,12,18,20,16,19,15,17);(5,7)(6,12)(8,15)(9,17)(10,18)(11,16)(13,20)(14,19)Polycyclic presentation:
2^8|a^2=f,b^2=dh,d^2=h,e^2=gh,g^2=h,b^a=bd,c^a=ce,d^a=dh,e^a=eg,g^a=gh,e^c=eg,g^c=gh46 conjugacy classes — view the full character table.
| maximal subgroup of | #131832, #131833, #131836, … |
| maximal normal subgroup of | #131832, #131833, #131836, … |
| maximal quotient of | #134367, #134412, #134445, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 5809);