Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #23918 |
| automorphism | Aut(G) order 65536 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C25 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | C2×#127 | C22 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C43 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
498 conjugacy classes of subgroups; only the 157 normal subgroups are shown.
This group has 498 conjugacy classes of subgroups — too many to draw. Only its 157 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:
(5,6,9,12)(7,11,8,10)(13,14)(15,17)(16,19)(18,20);(1,2,3,4)(5,7,9,8)(6,10,12,11);(2,4)(14,17)(15,20)(18,19);(5,8,9,7)(6,11,12,10)Polycyclic presentation:
2^8|a^2=e,b^2=eg,d^2=e,f^2=h,b^a=be,c^a=cf,d^a=de,f^a=fh,c^b=cg,f^c=fh52 conjugacy classes — view the full character table.
| maximal subgroup of | #102890, #102891, #102893, … |
| maximal normal subgroup of | #102890, #102891, #102893, … |
| maximal quotient of | #318653, #318662, #318674, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 21267);