Properties

Label 656.61
Modulus $656$
Conductor $656$
Order $20$
Real no
Primitive yes
Minimal yes
Parity even

Related objects

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Show commands: Pari/GP / SageMath
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(656, base_ring=CyclotomicField(20)) M = H._module chi = DirichletCharacter(H, M([0,15,17]))
 
Copy content pari:[g,chi] = znchar(Mod(61,656))
 

Basic properties

Modulus: \(656\)
Conductor: \(656\)
Copy content sage:chi.conductor()
 
Copy content pari:znconreyconductor(g,chi)
 
Order: \(20\)
Copy content sage:chi.multiplicative_order()
 
Copy content pari:charorder(g,chi)
 
Real: no
Primitive: yes
Copy content sage:chi.is_primitive()
 
Copy content pari:#znconreyconductor(g,chi)==1
 
Minimal: yes
Parity: even
Copy content sage:chi.is_odd()
 
Copy content pari:zncharisodd(g,chi)
 

Galois orbit 656.bu

\(\chi_{656}(5,\cdot)\) \(\chi_{656}(21,\cdot)\) \(\chi_{656}(61,\cdot)\) \(\chi_{656}(77,\cdot)\) \(\chi_{656}(125,\cdot)\) \(\chi_{656}(213,\cdot)\) \(\chi_{656}(525,\cdot)\) \(\chi_{656}(613,\cdot)\)

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

Related number fields

Field of values: \(\Q(\zeta_{20})\)
Fixed field: 20.20.158322645890088916737377685620382389712556392448.1

Values on generators

\((575,165,129)\) → \((1,-i,e\left(\frac{17}{20}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(5\)\(7\)\(9\)\(11\)\(13\)\(15\)\(17\)\(19\)\(21\)
\( \chi_{ 656 }(61, a) \) \(1\)\(1\)\(1\)\(e\left(\frac{9}{20}\right)\)\(e\left(\frac{13}{20}\right)\)\(1\)\(e\left(\frac{3}{10}\right)\)\(e\left(\frac{3}{5}\right)\)\(e\left(\frac{9}{20}\right)\)\(e\left(\frac{1}{20}\right)\)\(e\left(\frac{9}{10}\right)\)\(e\left(\frac{13}{20}\right)\)
Copy content sage:chi.jacobi_sum(n)
 
\( \chi_{ 656 }(61,a) \;\) at \(\;a = \) e.g. 2

Gauss sum

Copy content sage:chi.gauss_sum(a)
 
Copy content pari:znchargauss(g,chi,a)
 
\( \tau_{ a }( \chi_{ 656 }(61,·) )\;\) at \(\;a = \) e.g. 2

Jacobi sum

Copy content sage:chi.jacobi_sum(n)
 
\( J(\chi_{ 656 }(61,·),\chi_{ 656 }(n,·)) \;\) for \( \; n = \) e.g. 1

Kloosterman sum

Copy content sage:chi.kloosterman_sum(a,b)
 
\(K(a,b,\chi_{ 656 }(61,·)) \;\) at \(\; a,b = \) e.g. 1,2