Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 4 |
| isoclinism | isoclinic class of D16 |
| automorphism | Aut(G) order 8192 |
| homology | Abelianization (H1) = C4×C8 · Schur multiplier (H2) = C2×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center | C42 | D8 |
| commutator | C8 | C4×C8 |
| Frattini, cosocle | C2×C4×C8 | C22 |
| socle | C22 | #340 |
| prime radical | C23 | #106 |
| LCS | G ▷ C8 ▷ C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C42 ◁ C2×C42 ◁ C2×C4×C8 ◁ G | |
| LECS | G ▷ C2×C4×C8 ▷ C2×C4 ▷ C2 ▷ C1 | |
111 conjugacy classes of subgroups.
| minimal degree | μ(G) = 40 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 2 generators on 40 points:
(1,2,3,5,4,6,7,8)(9,10)(11,20)(12,25)(13,28)(14,30)(15,19)(16,21)(17,27)(18,26)(22,32)(23,40)(24,36)(29,33)(31,39)(34,38)(35,37);(9,11,13,22,26,37,27,38,15,24,12,21,14,23,29,39)(10,16,17,20,30,34,28,40,19,32,33,36,18,31,25,35)Polycyclic presentation:
2^8|a^2=d,b^2=e,c^2=fh,d^2=g,e^2=fh,f^2=h,b^a=bc,c^a=cf,e^a=efh,f^a=fh88 conjugacy classes — view the full character table.
| maximal subgroup of | #93918, #93939, C2×#7155, … |
| maximal normal subgroup of | #93918, #93939, C2×#7155, … |
| maximal quotient of | #92912, #92916, #92924, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 143);