Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #9307 |
| automorphism | Aut(G) = C23×#7737411 (order 4096) · Inn(G) = #386 · Out(G) = C26 |
| homology | Abelianization (H1) = C22×C4 · Schur multiplier (H2) = C22×C4 |
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 | |
235 conjugacy classes of subgroups; only the 67 normal subgroups are shown.
This group has 235 conjugacy classes of subgroups — too many to draw. Only its 67 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)(11,15,20,31)(12,22)(13,26)(14,17)(16,24)(18,28)(19,35,23,40)(21,38,37,30)(25,34)(27,33)(29,39,32,36);(1,2,3,8,5,7,4,6)(9,11,14,20)(10,15)(12,23,25,19)(13,21,28,37)(16,32)(17,31)(18,30)(22,40)(24,39,27,36)(26,38)(29,33)(34,35);(1,3,5,4)(2,6,7,8)(9,12,14,25)(10,16,17,33)(11,19,20,23)(13,27,28,24)(15,29,31,32)(18,34,26,22)(21,39,37,36)(30,40,38,35)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,c^b=cg,d^b=dh,f^b=fh,e^c=eh37 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#9310, #199177, #199179, … |
| maximal normal subgroup of | C2×#9310, #199177, #199179, … |
| maximal quotient of | #99974, #99978, #99990, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 2298);