Finite Group Databasebeta
Cayley diagram

C4×Dic19 #64521

order304
isoclinismisoclinic class of D19
automorphism?
homologyAbelianization (H1) = C42 · Schur multiplier (H2) = C4

Aliases

direct productC4×Dic19
unambiguous semidirect productC19⋊C42

Splittings

derived, SylowC19 ⋊ C42

Subgroups

subgroupG/H
center, hypercenterC2×C4D19
commutator, hypocenterC19C42
FrattiniC22C2×D19
FittingC2×C4×C19C2
socle, prime radical, cosocleC22×C19C22
LCSG ▷ C19
UCSC1 ◁ C2×C4

30 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 27
transitive degreeμt(G) = 304

A minimal faithful permutation representation — 2 generators on 27 points:

(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15)(16,17)(18,19)(24,25,26,27);(1,2,4,6,8,10,12,14,16,18,19,17,15,13,11,9,7,5,3)(20,21,22,23)

Conjugacy classes & character table

88 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC8×Dic19, Dic19⋊C8, #10597272, …
maximal normal subgroup ofC8×Dic19, Dic19⋊C8, #10597272, …
maximal quotient ofC4×C19⋊C8, #10597260, C8×Dic19, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(304, 10);