Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1999 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C24 | C2×D4 |
| commutator | C22×C4 | C22×C4 |
| Frattini, cosocle | C23×C4 | C23 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C24 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C23×C4 ▷ C2 ▷ C1 | |
399 conjugacy classes of subgroups; only the 159 normal subgroups are shown.
This group has 399 conjugacy classes of subgroups — too many to draw. Only its 159 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) = 256 |
A minimal faithful permutation representation — 3 generators on 20 points:
(5,6,7,8)(9,10,12,11)(14,19)(15,20)(16,17);(1,2)(3,4)(9,11,12,10)(13,14,16,19,18,20,17,15);(2,4)(10,11)(13,15,16,14,18,19,17,20)Polycyclic presentation:
2^8|a^2=g,b^2=eh,c^2=d,d^2=h,e^2=h,b^a=bd,c^a=ce,d^a=dh,e^a=eh,c^b=cf64 conjugacy classes — view the full character table.
| maximal subgroup of | #93945, C2×#11268, #358232, … |
| maximal normal subgroup of | #93945, C2×#11268, #358232, … |
| maximal quotient of | #120604, #120608, #120610, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 4256);