Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #24264 |
| automorphism | Aut(G) = C211×D4 (order 16384) · Inn(G) = C22×D4 · Out(G) = C29 |
| homology | Abelianization (H1) = C24 · Schur multiplier (H2) = C24 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator, Frattini, cosocle | C22×C4 | C24 |
| prime radical | C22×D4 | C23 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C4×C4⋊C4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
427 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 20 points:
(5,6)(7,12)(8,10)(9,11)(13,14,18,19)(15,20,16,17);(1,2)(3,4)(5,7,9,8)(6,10,11,12)(13,15,17,14,18,16,20,19);(2,4)(5,8,9,7)(6,10,11,12)(13,16,17,19,18,15,20,14);(6,11)(10,12)(13,15,17,14,18,16,20,19)Polycyclic presentation:
2^8|a^2=h,b^2=e,c^2=e,d^2=f,e^2=h,f^2=h,b^a=be,c^a=cf,d^a=de,e^a=eh,f^a=fh,c^b=cg58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#26820, #6443853, #6443882, … |
| maximal normal subgroup of | C2×#26820, #6443853, #6443882, … |
| maximal quotient of | #311033, #311035, #311037, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 19808);