Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #9303 |
| automorphism | Aut(G) = C23×#7737411 (order 4096) · Inn(G) = #386 · Out(G) = C26 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C22 | #386 |
| commutator | C42 | C22×C4 |
| Frattini, cosocle | C2×C42 | C23 |
| prime radical | #532 | C22 |
| LCS | G ▷ C42 ▷ C22 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C2×C42 ◁ G | |
| LECS | G ▷ C2×C42 ▷ C22 ▷ C1 | |
245 conjugacy classes of subgroups; only the 75 normal subgroups are shown.
This group has 245 conjugacy classes of subgroups — too many to draw. Only its 75 normal subgroups are shown.
Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 64 |
A minimal faithful permutation representation — 3 generators on 40 points:
(2,6)(3,4)(7,8)(9,10)(11,15,20,30)(12,22)(13,25)(14,17)(16,23)(18,27)(19,33,34,40)(21,37,36,29)(24,32)(26,31)(28,38,39,35);(1,2,3,7,5,8,4,6)(9,11,14,20)(10,15)(12,19,24,34)(13,21,27,36)(16,28)(17,30)(18,29)(22,33)(23,35,26,38)(25,37)(31,39)(32,40);(1,3,5,4)(2,7,8,6)(9,12,14,24)(10,16,17,31)(11,19,20,34)(13,26,27,23)(15,28,30,39)(18,32,25,22)(21,38,36,35)(29,40,37,33)Polycyclic presentation:
2^8|a^2=f,b^2=dfg,c^2=g,d^2=gh,e^2=h,b^a=bd,c^a=ce,d^a=dg,e^a=eh,d^b=dh,f^b=fh,e^c=eh49 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#9306, #199168, #199170, … |
| maximal normal subgroup of | C2×#9306, #199168, #199170, … |
| maximal quotient of | #99966, #99970, #99982, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 2294);