Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #1619 |
| automorphism | Aut(G) = C25×D42 (order 2048) · Inn(G) = #120 · Out(G) = C26 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C23 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C2×C4 | #120 |
| commutator | C42 | C22×C4 |
| Frattini, cosocle | C2×C42 | C23 |
| socle | C22 | #386 |
| prime radical | C2×#41 | D4 |
| LCS | G ▷ C42 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C2×C4 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
215 conjugacy classes of subgroups; only the 69 normal subgroups are shown.
This group has 215 conjugacy classes of subgroups — too many to draw. Only its 69 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 32 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 3 generators on 32 points:
(1,2,5,9,6,10,4,8)(3,11,12,7,14,15,13,16)(18,22,24,27)(19,25,26,28);(1,3)(2,7)(4,12)(5,13)(6,14)(8,15)(9,11)(10,16)(17,18,20,27,21,24,29,22)(19,23,28,31,26,32,25,30);(1,4,6,5)(2,8,10,9)(3,12,14,13)(7,15,16,11)(17,19,21,26)(18,23,24,32)(20,28,29,25)(22,30,27,31)Polycyclic presentation:
2^8|a^2=f,b^2=df,c^2=g,d^2=g,e^2=h,f^2=gh,b^a=bd,c^a=ce,d^b=dg,e^b=eh,f^b=fg,d^c=dh,e^c=eh,f^c=fh52 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#8994, #194366, #194368, … |
| maximal normal subgroup of | C2×#8994, #194366, #194368, … |
| maximal quotient of | #99504, #99506, #99512, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 1982);