Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #24378 |
| automorphism | Aut(G) order 65536 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C43 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
397 conjugacy classes of subgroups; only the 147 normal subgroups are shown.
This group has 397 conjugacy classes of subgroups — too many to draw. Only its 147 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 — 4 generators on 20 points:
(5,6,8,9)(7,11,12,10)(14,17)(15,19)(18,20);(1,2,3,4)(6,9)(10,11)(13,14,16,17)(15,19,20,18);(2,4)(13,15,14,18,16,20,17,19);(5,7,8,12)(6,10,9,11)(13,14,16,17)(15,18,20,19)Polycyclic presentation:
2^8|a^2=eh,b^2=g,c^2=fh,d^2=e,f^2=h,b^a=be,c^a=cf,d^a=de,f^a=fh,c^b=cg58 conjugacy classes — view the full character table.
| maximal subgroup of | #101825, #260280, #260282, … |
| maximal normal subgroup of | #101825, #260280, #260282, … |
| maximal quotient of | #324768, #324773, #324778, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 21644);