Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #327 |
| automorphism | Aut(G) order 32768 |
| homology | Abelianization (H1) = C2×C42 · Schur multiplier (H2) = C22×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C22×C4 | C22⋊C4 |
| commutator | C2×C4 | C2×C42 |
| Frattini, cosocle | C2×C42 | C23 |
| socle | C23 | C2×C22⋊C4 |
| prime radical | C24 | C22⋊C4 |
| LCS | G ▷ C2×C4 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22×C4 ◁ C22×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
373 conjugacy classes of subgroups; only the 135 normal subgroups are shown.
This group has 373 conjugacy classes of subgroups — too many to draw. Only its 135 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 — 3 generators on 20 points:
(1,2,3,4)(5,6)(7,9)(8,11)(10,12)(13,14,17,20)(15,18,19,16);(6,9,11,10)(13,15,18,14,17,19,16,20);(13,16,17,18)(14,15,20,19)Polycyclic presentation:
2^8|a^2=e,b^2=f,c^2=h,d^2=g,f^2=h,b^a=bd,d^a=dg,f^a=fgh,d^b=dh76 conjugacy classes — view the full character table.
| maximal subgroup of | #105454, #105455, #105456, … |
| maximal normal subgroup of | #105454, #105455, #105456, … |
| maximal quotient of | #95259, #95261, #95264, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 1017);