Finite Group DatabasebetaFinite Group Databasebeta| order | 256 |
| nilpotency class | 3 |
| isoclinism | isoclinic class of #24274 |
| 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 | #2416 | C2 |
| LCS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
| UCS | C1 ◁ C23 ◁ C2×C4×D4 ◁ G | |
| LECS | G ▷ C22×C4 ▷ C2 ▷ C1 | |
457 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)(7,10)(8,9)(11,12)(13,14,17,19,18,15,16,20);(1,2)(3,4)(6,9)(10,12)(13,15,17,20,18,14,16,19);(2,4)(5,7,8,11)(6,10,9,12)(13,14)(15,18)(16,19)(17,20);(6,9)(10,12)(13,16,18,17)(14,19,15,20)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=deh,c^b=cg,d^b=dh,f^c=fh,g^c=gh46 conjugacy classes — view the full character table.
| maximal subgroup of | C2×#25257, #6441744, #6441749, … |
| maximal normal subgroup of | C2×#25257, #6441744, #6441749, … |
| maximal quotient of | #286396, #286398, #286404, … |
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(256, 18245);