Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 5 |
| isoclinism | isoclinic class of #7418 |
| automorphism | Aut(G) = C2×D4×#12067 (order 4096) · Inn(G) = #357 · Out(G) = C23×C8 |
| homology | Abelianization (H1) = C2×C4 · Schur multiplier (H2) = C2 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle, prime radical | C22 | #357 |
| commutator | C2×C16 | C2×C4 |
| Frattini, cosocle | C4×C16 | C22 |
| LCS | G ▷ C2×C16 ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C22 ◁ C42 ◁ C4×C8 ◁ C4×C16 ◁ G | |
| LECS | G ▷ C4×C16 ▷ C2×C8 ▷ C4 ▷ C2 ▷ C1 | |
54 conjugacy classes of subgroups.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 256 |
A minimal faithful permutation representation — 2 generators on 40 points:
(2,5)(3,7)(6,8)(9,10,11,16,21,29,36,27,13,18,22,30,25,33,37,28,14,19,23,31,38,40,39,34,24,32,35,26,12,17,20,15);(1,2,4,6)(3,8,7,5)(10,15)(11,20)(12,21)(13,24)(16,17)(18,34)(19,28)(22,39)(23,37)(25,38)(26,29)(27,32)(30,40)(31,33)(35,36)Polycyclic presentation:
2^8|a^2=d,b^2=e,c^2=fg,d^2=efg,f^2=gh,g^2=h,b^a=bc,c^a=ce,c^b=cf,d^b=def,f^b=fg,g^b=gh49 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#7450, #150953, #150954, … |
| maximal normal subgroup of | C2×#7450, #150953, #150954, … |
| maximal quotient of | #93931, #94351, #94740, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 438);