Finite Group Databasebeta
Cayley diagram

C2×H(3,𝔽4) #3526

order128
nilpotency class2
isoclinismisoclinic class of #560
automorphismAut(G) order 589824
homologyAbelianization (H1) = C25 · Schur multiplier (H2) = C26×C42

Aliases

direct productC2×H(3,𝔽4)

Subgroups

subgroupG/H
center, socleC23C24
commutator, Frattini, cosocleC22C25
LCSG ▷ C22 ▷ C1
UCSC1 ◁ C23 ◁ G
LECSG ▷ C22 ▷ C1

704 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 18
transitive degreeμt(G) = 32

A minimal faithful permutation representation — 5 generators on 18 points:

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

Conjugacy classes & character table

38 conjugacy classes — view the full character table.

Relationships

derived subgroup of#72268241, #72340506, #72340507, …
Fitting subgroup ofC2×#5450, C2×#5464, C2×#5465, …
maximal subgroup of#8506, #12763, #12774, …
maximal normal subgroup of#8506, #12763, #12774, …
maximal quotient ofC2×#2375, C2×#2379, C4×H(3,𝔽4), …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(128, 2258);