Properties

Label 1521.20
Modulus $1521$
Conductor $1521$
Order $156$
Real no
Primitive yes
Minimal yes
Parity even

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(1521, base_ring=CyclotomicField(156))
 
M = H._module
 
chi = DirichletCharacter(H, M([26,11]))
 
pari: [g,chi] = znchar(Mod(20,1521))
 

Basic properties

Modulus: \(1521\)
Conductor: \(1521\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(156\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 1521.cb

\(\chi_{1521}(20,\cdot)\) \(\chi_{1521}(41,\cdot)\) \(\chi_{1521}(50,\cdot)\) \(\chi_{1521}(110,\cdot)\) \(\chi_{1521}(137,\cdot)\) \(\chi_{1521}(158,\cdot)\) \(\chi_{1521}(167,\cdot)\) \(\chi_{1521}(227,\cdot)\) \(\chi_{1521}(254,\cdot)\) \(\chi_{1521}(275,\cdot)\) \(\chi_{1521}(284,\cdot)\) \(\chi_{1521}(344,\cdot)\) \(\chi_{1521}(371,\cdot)\) \(\chi_{1521}(392,\cdot)\) \(\chi_{1521}(401,\cdot)\) \(\chi_{1521}(461,\cdot)\) \(\chi_{1521}(509,\cdot)\) \(\chi_{1521}(518,\cdot)\) \(\chi_{1521}(578,\cdot)\) \(\chi_{1521}(605,\cdot)\) \(\chi_{1521}(626,\cdot)\) \(\chi_{1521}(635,\cdot)\) \(\chi_{1521}(722,\cdot)\) \(\chi_{1521}(743,\cdot)\) \(\chi_{1521}(752,\cdot)\) \(\chi_{1521}(812,\cdot)\) \(\chi_{1521}(839,\cdot)\) \(\chi_{1521}(860,\cdot)\) \(\chi_{1521}(869,\cdot)\) \(\chi_{1521}(929,\cdot)\) ...

sage: chi.galois_orbit()
 
order = charorder(g,chi)
 
[ charpow(g,chi, k % order) | k <-[1..order-1], gcd(k,order)==1 ]
 

Related number fields

Field of values: $\Q(\zeta_{156})$
Fixed field: Number field defined by a degree 156 polynomial (not computed)

Values on generators

\((677,847)\) → \((e\left(\frac{1}{6}\right),e\left(\frac{11}{156}\right))\)

First values

\(a\) \(-1\)\(1\)\(2\)\(4\)\(5\)\(7\)\(8\)\(10\)\(11\)\(14\)\(16\)\(17\)
\( \chi_{ 1521 }(20, a) \) \(1\)\(1\)\(e\left(\frac{37}{156}\right)\)\(e\left(\frac{37}{78}\right)\)\(e\left(\frac{73}{156}\right)\)\(e\left(\frac{11}{52}\right)\)\(e\left(\frac{37}{52}\right)\)\(e\left(\frac{55}{78}\right)\)\(e\left(\frac{67}{156}\right)\)\(e\left(\frac{35}{78}\right)\)\(e\left(\frac{37}{39}\right)\)\(e\left(\frac{31}{39}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 1521 }(20,a) \;\) at \(\;a = \) e.g. 2