Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #24378 |
| automorphism | Aut(G) order 131072 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C22×C42 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | #2856 | C2 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
517 conjugacy classes of subgroups; only the 151 normal subgroups are shown.
This group has 517 conjugacy classes of subgroups — too many to draw. Only its 151 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:
(2,3)(5,6,8,10)(7,9,11,12)(13,14,17,19)(15,16,20,18);(1,2,4,3)(5,7)(6,9)(8,11)(10,12)(14,19)(15,20);(7,11)(9,12)(13,15,18,14,17,20,16,19);(1,3,4,2)(13,16,17,18)(14,15,19,20)Polycyclic presentation:
2^8|a^2=g,b^2=eh,c^2=f,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 | #101880, #149912, #149916, … |
| maximal normal subgroup of | #101880, #149912, #149916, … |
| maximal quotient of | #315570, #315571, #315572, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 20895);