Finite Group Databasebeta

C7⋊(Dic71⋊C7) #28358156

order13916
automorphism?
homologyAbelianization (H1) = C4×C7 · Schur multiplier (H2) = C1

Aliases

unambiguous semidirect productC7⋊(Dic71⋊C7)
unambiguous semidirect product(C71⋊C7)⋊Dic7
unambiguous semidirect productDic497⋊C7

Splittings

derivedC7×C71 ⋊ C4×C7
HallC7×C71⋊C7 ⋊ C4
SylowC71 ⋊ C7×Dic7

Subgroups

subgroupG/H
center, Frattini, hypercenterC2C7⋊(D71⋊C7)
commutator, hypocenterC7×C71C4×C7
Fitting, socle, cosocleC2×C7×C71C2×C7
prime radicalC2×C7×C71⋊C7C2
LCSG ▷ C7×C71
UCSC1 ◁ C2

36 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 1988

Polycyclic presentation:

2,7^2,71,2|a^2=e,c^a=c^6,d^a=d^70,d^b=d^45

Conjugacy classes & character table

140 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(13916, 16);