Properties

Label 2720.31
Modulus $2720$
Conductor $68$
Order $16$
Real no
Primitive no
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(2720, base_ring=CyclotomicField(16)) M = H._module chi = DirichletCharacter(H, M([8,0,0,9]))
 
Copy content pari:[g,chi] = znchar(Mod(31,2720))
 

Basic properties

Modulus: \(2720\)
Conductor: \(68\)
Copy content sage:chi.conductor()
 
Copy content pari:znconreyconductor(g,chi)
 
Order: \(16\)
Copy content sage:chi.multiplicative_order()
 
Copy content pari:charorder(g,chi)
 
Real: no
Primitive: no, induced from \(\chi_{68}(31,\cdot)\)
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 2720.hl

\(\chi_{2720}(31,\cdot)\) \(\chi_{2720}(351,\cdot)\) \(\chi_{2720}(991,\cdot)\) \(\chi_{2720}(1151,\cdot)\) \(\chi_{2720}(1791,\cdot)\) \(\chi_{2720}(2111,\cdot)\) \(\chi_{2720}(2271,\cdot)\) \(\chi_{2720}(2591,\cdot)\)

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: \(\Q(\zeta_{16})\)
Fixed field: \(\Q(\zeta_{68})^+\)

Values on generators

\((511,1701,2177,1601)\) → \((-1,1,1,e\left(\frac{9}{16}\right))\)

First values

\(a\) \(-1\)\(1\)\(3\)\(7\)\(9\)\(11\)\(13\)\(19\)\(21\)\(23\)\(27\)\(29\)
\( \chi_{ 2720 }(31, a) \) \(1\)\(1\)\(e\left(\frac{1}{16}\right)\)\(e\left(\frac{11}{16}\right)\)\(e\left(\frac{1}{8}\right)\)\(e\left(\frac{7}{16}\right)\)\(i\)\(e\left(\frac{3}{8}\right)\)\(-i\)\(e\left(\frac{15}{16}\right)\)\(e\left(\frac{3}{16}\right)\)\(e\left(\frac{5}{16}\right)\)
Copy content sage:chi.jacobi_sum(n)
 
\( \chi_{ 2720 }(31,a) \;\) at \(\;a = \) e.g. 2