Finite Group Databasebeta

D161⋊C4 #13046225

order1288
isoclinismisoclinic class of D7×D23
automorphism?
homologyAbelianization (H1) = C2×C4 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productD161⋊C4

Splittings

derived, HallC7×C23 ⋊ C2×C4
SylowC23 ⋊ C4×D7
SylowC7 ⋊ C4×D23

Subgroups

subgroupG/H
center, Frattini, hypercenterC2D7×D23
commutator, hypocenterC7×C23C2×C4
Fitting, socle, cosocleC2×C7×C23C22
prime radicalC2×D161C2
LCSG ▷ C7×C23
UCSC1 ◁ C2

32 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 644

Polycyclic presentation:

2^3,7,23|a^2=c,b^2=c,e^a=e^22,d^b=d^6

Conjugacy classes & character table

130 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(1288, 7);