Finite Group Databasebeta
Cayley diagram

C9×3−1+2 #6889

order243
nilpotency class2
isoclinismisoclinic class of H(3,𝔽3)
automorphismAut(G) = C3×#72224542 (order 8748) · Inn(G) = C32 · Out(G) = C3×#66432
homologyAbelianization (H1) = C32×C9 · Schur multiplier (H2) = C32

Aliases

direct productC9×3−1+2

Subgroups

subgroupG/H
centerC3×C9C32
commutatorC3C32×C9
Frattini, socle, cosocleC32C33
prime radicalC33C32
LCSG ▷ C3 ▷ C1
UCSC1 ◁ C3×C9 ◁ G
LECSG ▷ C32 ▷ C1

74 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 18
transitive degreeμt(G) = 81

A minimal faithful permutation representation — 3 generators on 18 points:

(1,2,4,3,5,7,6,8,9);(10,11,13,12,15,17,16,14,18);(11,14,15)(13,17,18)

Conjugacy classes & character table

99 conjugacy classes — view the full character table.

Relationships

Fitting subgroup ofC9×AGL(1,ℤ/9), D9×3−1+2, #92299, …
maximal subgroup ofC9×AGL(1,ℤ/9), D9×3−1+2, #92299, …
maximal normal subgroup ofC9×AGL(1,ℤ/9), D9×3−1+2, #92299, …
maximal quotient ofC2×C9×3−1+2, C9×C32⋊C9, C9×C9⋊C9, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(243, 36);