Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #30412 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | C22×D8 | C22 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C4×C4⋊C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
439 conjugacy classes of subgroups; only the 127 normal subgroups are shown.
This group has 439 conjugacy classes of subgroups — too many to draw. Only its 127 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) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(5,6,9,11)(7,8,12,10)(13,14,15,19,16,20,17,18);(1,2)(3,4)(5,7,9,12)(6,10,11,8)(13,15,16,17)(14,18,20,19);(2,4)(14,19)(15,17)(18,20);(5,8,9,10)(6,7,11,12)(14,19)(15,17)(18,20)Polycyclic presentation:
2^8|a^2=ef,b^2=e,d^2=eh,f^2=h,b^a=be,c^a=cf,d^a=defh,c^b=cg,d^b=de,f^c=fh,f^d=fh40 conjugacy classes — view the full character table.
| maximal subgroup of | #125743, #126089, #126353, … |
| maximal normal subgroup of | #125743, #126089, #126353, … |
| maximal quotient of | #345604, #345619, #345626, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 24235);