Finite Group Databasebeta

C3⋊((C139⋊C3)⋊D7) #31776143

order17514
automorphism?
homologyAbelianization (H1) = C2×C3 · Schur multiplier (H2) = C1

Aliases

unambiguous semidirect productC3⋊((C139⋊C3)⋊D7)
unambiguous semidirect product(C139⋊C3)⋊D21

Splittings

Fitting, socle, derivedC3×C7×C139 ⋊ C2×C3
HallC3×C7×C139⋊C3 ⋊ C2
HallC3×C139⋊C3 ⋊ D7
HallC7×C139 ⋊ C3×D3
SylowC139 ⋊ C3×D21
SylowC7 ⋊ C3⋊(D139⋊C3)

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC3×C7×C139C2×C3
LCSG ▷ C3×C7×C139
UCSC1

36 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 2919

Polycyclic presentation:

2,3^2,7,139|c^a=c^2,d^a=d^6,e^a=e^138,e^b=e^42

Conjugacy classes & character table

519 conjugacy classes — view the full character table.

Relationships

maximal subgroup ofD21×D139⋊C3, D7×C3⋊(D139⋊C3), D3×(C139⋊C3)⋊D7, …
maximal normal subgroup ofD21×D139⋊C3, D7×C3⋊(D139⋊C3), D3×(C139⋊C3)⋊D7, …
maximal quotient ofC3⋊((C139⋊C3)⋊Dic7), C2×C3⋊((C139⋊C3)⋊D7)

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(17514, 56);