Finite Group Databasebeta

(C7⋊D7)⋊D155 #44477188

order30380
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect product(C7⋊D7)⋊D155

Splittings

Fitting, socle, derived, HallC5×C72×C31 ⋊ C22
HallC72×C31 ⋊ C2×D5
HallC5×C72 ⋊ C2×D31
HallC5×C31 ⋊ D72
SylowC72 ⋊ C2×D155
SylowC31 ⋊ D35⋊D7
SylowC5 ⋊ (C7⋊D7)⋊D31

Subgroups

subgroupG/H
center, Frattini, hypercenterC1G
commutator, Fitting, socle, cosocle, hypocenterC5×C72×C31C22
LCSG ▷ C5×C72×C31
UCSC1

104 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 2170

Polycyclic presentation:

2^2,5,7^2,31|c^a=c^4,d^a=d^6,f^a=f^30,d^b=d^6,e^b=e^6

Conjugacy classes & character table

2027 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(30380, 97);