Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #3186 |
| automorphism | Aut(G) = C211×D4 (order 16384) · Inn(G) = C22×D4 · Out(G) = C29 |
| homology | Abelianization (H1) = C23×C4 · Schur multiplier (H2) = C23×C4 |
No aliases for this group.
| subgroup | G/H | |
|---|---|---|
| center, socle | C23 | C22×D4 |
| commutator | C2×C4 | C23×C4 |
| Frattini, cosocle | C22×C4 | C24 |
| prime radical | C22×D4 | C23 |
| LCS | G ▷ C2×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C43 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
426 conjugacy classes of subgroups.
| minimal degree | μ(G) = 28 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 28 points:
(1,2,4,3)(6,9)(7,11)(13,14,16,18)(15,21,22,28)(17,25,24,20)(19,26,27,23);(1,3,4,2)(5,6,8,9)(7,10,11,12)(14,18)(15,22)(20,25)(23,26);(6,9)(10,12)(13,15,16,22)(14,19,18,27)(17,26,24,23)(20,28,25,21);(5,7,8,11)(6,10,9,12)(14,18)(19,27)(20,25)(21,28)Polycyclic presentation:
2^8|a^2=g,b^2=eg,c^2=h,d^2=eh,f^2=h,b^a=be,c^a=cf,d^a=de,f^a=fh,c^b=ce,f^c=fh64 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#22150, #6375833, #6375851, … |
| maximal normal subgroup of | C2×#22150, #6375833, #6375851, … |
| maximal quotient of | #218457, #218463, #218481, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 15138);