Finite Group Databasebeta
Cayley diagram

Dic19⋊C4 #64522

order304
isoclinismisoclinic class of Dic38
automorphism?
homologyAbelianization (H1) = C2×C4 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productDic19⋊C4

Splittings

SylowC19 ⋊ C4⋊C4

Subgroups

subgroupG/H
center, FrattiniC22C2×D19
commutatorC2×C19C2×C4
FittingC2×C4×C19C2
socle, prime radical, cosocleC22×C19C22
hypercenterC2×C4D19
hypocenterC19C4⋊C4
LCSG ▷ C2×C19 ▷ C19
UCSC1 ◁ C22 ◁ C2×C4

26 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:

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

Polycyclic presentation:

2^4,19|a^2=d,b^2=c,b^a=bd,e^a=e^18

Conjugacy classes & character table

82 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofC4×Dic38, #10597316, #10597318, …
maximal normal subgroup ofC4×Dic38, #10597316, #10597318, …
maximal quotient of#10597264, #10597265, Dic19⋊C8, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(304, 11);