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 | D4 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
427 conjugacy classes of subgroups.
| minimal degree | μ(G) = 28 |
| transitive degree | μt(G) = 128 |
A minimal faithful permutation representation — 4 generators on 28 points:
(5,6)(7,10)(8,9)(11,12)(13,14,16,20,18,22,17,21)(15,23,26,28,27,24,25,19);(1,2)(3,4)(6,9)(10,12)(13,14,16,20,18,22,17,21)(15,24,26,19,27,23,25,28);(2,4)(5,7,8,11)(6,10,9,12)(13,15)(14,19)(16,25)(17,26)(18,27)(20,24)(21,23)(22,28);(6,9)(10,12)(13,16,18,17)(14,20,22,21)(15,25,27,26)(19,24,28,23)Polycyclic presentation:
2^8|a^2=f,b^2=f,c^2=e,d^2=h,f^2=h,g^2=h,b^a=be,c^a=cf,d^a=de,c^b=cg,f^c=fh,g^c=gh58 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#25233, #6441717, #6441746, … |
| maximal normal subgroup of | C2×#25233, #6441717, #6441746, … |
| maximal quotient of | #285628, #285630, #285636, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 18221);