Finite Group Databasebeta

C4⋊#16861621 #30657657

order16448
automorphism?
homologyAbelianization (H1) = C2×C16 · Schur multiplier (H2) = C2

Aliases

unambiguous semidirect productC4⋊#16861621

Splittings

SylowC257 ⋊ C4⋊C16

Subgroups

subgroupG/H
center, FrattiniC2×C4C2×#11759967
commutatorC2×C257C2×C16
FittingC42×C257C4
socle, prime radicalC22×C257C2×C8
cosocleC2×#14523339C22
hypercenterC42#11759967
hypocenterC257C4⋊C16
LCSG ▷ C2×C257 ▷ C257
UCSC1 ◁ C2×C4 ◁ C42

50 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 16448

Polycyclic presentation:

2^6,257|a^2=d,b^2=c,d^2=e,e^2=f,b^a=bc,g^a=g^241,g^d=g^256

Conjugacy classes & character table

1064 conjugacy classes. The character table is too large to display.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(16448, 1469);