Finite Group Databasebeta

D257⋊#131 #30657813

order16448
automorphism?
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C25

Aliases

unambiguous semidirect productD257⋊#131

Splittings

SylowC257 ⋊ C2×#131

Subgroups

subgroupG/H
centerC4C22×#11759967
commutator, socleC2×C257C23×C4
FrattiniC2C23×#11759967
Fitting#41×C257C4
prime radical#41×D257C2
cosocleDic257C24
hypercenter#41#11759967
hypocenterC257C2×#131
LCSG ▷ C2×C257 ▷ C257
UCSC1 ◁ C4 ◁ #41

266 conjugacy classes of subgroups.

Full subgroup data →

Presentation

transitive degreeμt(G) = 4112

Polycyclic presentation:

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

Conjugacy classes & character table

680 conjugacy classes — view the full character table.

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(16448, 1625);