Finite Group Databasebeta

(C7⋊C9)⋊D251 #44539431

order31626
automorphism?
homologyAbelianization (H1) = C2×C9 · Schur multiplier (H2) = C1

Aliases

unambiguous semidirect product(C7⋊C9)⋊D251
unambiguous semidirect productC251⋊(D7⋊C9)
unambiguous semidirect productD1757⋊C9

Splittings

derived, HallC7×C251 ⋊ C2×C9
HallC7⋊C9×C251 ⋊ C2
HallD1757 ⋊ C9
SylowC251 ⋊ D7⋊C9
HallC7⋊C9 ⋊ D251
SylowC7 ⋊ C9×D251

Subgroups

subgroupG/H
center, Frattini, hypercenterC3ΓL(1,𝔽8)⋊D251
commutator, hypocenterC7×C251C2×C9
Fitting, socle, cosocleC3×C7×C251C2×C3
prime radicalC3×D1757C3
LCSG ▷ C7×C251
UCSC1 ◁ C3

24 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 15813

Polycyclic presentation:

2,3,7,251,3|b^3=e,c^a=c^6,d^a=d^250,c^b=c^2

Conjugacy classes & character table

1896 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(31626, 12);