Finite Group Databasebeta

C7⋊(Dic127⋊C7) #38733523

order24892
automorphism?
homologyAbelianization (H1) = C4×C7 · Schur multiplier (H2) = C1

Aliases

unambiguous semidirect productC7⋊(Dic127⋊C7)
unambiguous semidirect product(C127⋊C7)⋊Dic7
unambiguous semidirect productDic889⋊C7

Splittings

derivedC7×C127 ⋊ C4×C7
HallC7×C127⋊C7 ⋊ C4
SylowC127 ⋊ C7×Dic7

Subgroups

subgroupG/H
center, Frattini, hypercenterC2C7⋊(D127⋊C7)
commutator, hypocenterC7×C127C4×C7
Fitting, socle, cosocleC2×C7×C127C2×C7
prime radicalC2×C7×C127⋊C7C2
LCSG ▷ C7×C127
UCSC1 ◁ C2

36 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 3556

Polycyclic presentation:

2,7^2,127,2|a^2=e,c^a=c^6,d^a=d^126,d^b=d^4

Conjugacy classes & character table

196 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(24892, 16);