Properties

Label 181.2
Modulus $181$
Conductor $181$
Order $180$
Real no
Primitive yes
Minimal yes
Parity odd

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Show commands: PariGP / SageMath
from sage.modular.dirichlet import DirichletCharacter
 
H = DirichletGroup(181, base_ring=CyclotomicField(180))
 
M = H._module
 
chi = DirichletCharacter(H, M([1]))
 
pari: [g,chi] = znchar(Mod(2,181))
 

Basic properties

Modulus: \(181\)
Conductor: \(181\)
sage: chi.conductor()
 
pari: znconreyconductor(g,chi)
 
Order: \(180\)
sage: chi.multiplicative_order()
 
pari: charorder(g,chi)
 
Real: no
Primitive: yes
sage: chi.is_primitive()
 
pari: #znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: odd
sage: chi.is_odd()
 
pari: zncharisodd(g,chi)
 

Galois orbit 181.r

\(\chi_{181}(2,\cdot)\) \(\chi_{181}(10,\cdot)\) \(\chi_{181}(18,\cdot)\) \(\chi_{181}(21,\cdot)\) \(\chi_{181}(23,\cdot)\) \(\chi_{181}(24,\cdot)\) \(\chi_{181}(28,\cdot)\) \(\chi_{181}(41,\cdot)\) \(\chi_{181}(47,\cdot)\) \(\chi_{181}(50,\cdot)\) \(\chi_{181}(53,\cdot)\) \(\chi_{181}(54,\cdot)\) \(\chi_{181}(57,\cdot)\) \(\chi_{181}(58,\cdot)\) \(\chi_{181}(63,\cdot)\) \(\chi_{181}(66,\cdot)\) \(\chi_{181}(69,\cdot)\) \(\chi_{181}(76,\cdot)\) \(\chi_{181}(77,\cdot)\) \(\chi_{181}(78,\cdot)\) \(\chi_{181}(83,\cdot)\) \(\chi_{181}(84,\cdot)\) \(\chi_{181}(85,\cdot)\) \(\chi_{181}(90,\cdot)\) \(\chi_{181}(91,\cdot)\) \(\chi_{181}(96,\cdot)\) \(\chi_{181}(97,\cdot)\) \(\chi_{181}(98,\cdot)\) \(\chi_{181}(103,\cdot)\) \(\chi_{181}(104,\cdot)\) ...

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: $\Q(\zeta_{180})$
Fixed field: Number field defined by a degree 180 polynomial (not computed)

Values on generators

\(2\) → \(e\left(\frac{1}{180}\right)\)

First values

\(a\) \(-1\)\(1\)\(2\)\(3\)\(4\)\(5\)\(6\)\(7\)\(8\)\(9\)\(10\)\(11\)
\( \chi_{ 181 }(2, a) \) \(-1\)\(1\)\(e\left(\frac{1}{180}\right)\)\(e\left(\frac{14}{45}\right)\)\(e\left(\frac{1}{90}\right)\)\(e\left(\frac{13}{15}\right)\)\(e\left(\frac{19}{60}\right)\)\(e\left(\frac{1}{12}\right)\)\(e\left(\frac{1}{60}\right)\)\(e\left(\frac{28}{45}\right)\)\(e\left(\frac{157}{180}\right)\)\(e\left(\frac{31}{90}\right)\)
sage: chi.jacobi_sum(n)
 
\( \chi_{ 181 }(2,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

sage: chi.gauss_sum(a)
 
pari: znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 181 }(2,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

sage: chi.jacobi_sum(n)
 
\( J(\chi_{ 181 }(2,·),\chi_{ 181 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

sage: chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 181 }(2,·)) \;\) at \(\; a,b = \) e.g. 1,2