Properties

Label 257400.j
Number of curves $2$
Conductor $257400$
CM no
Rank $2$
Graph

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Show commands: SageMath
E = EllipticCurve("j1")
 
E.isogeny_class()
 

Elliptic curves in class 257400.j

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
257400.j1 257400j2 \([0, 0, 0, -79275, 791750]\) \(2361864386/1355211\) \(31614362208000000\) \([2]\) \(1966080\) \(1.8557\)  
257400.j2 257400j1 \([0, 0, 0, 19725, 98750]\) \(72765788/42471\) \(-495381744000000\) \([2]\) \(983040\) \(1.5091\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 257400.j have rank \(2\).

Complex multiplication

The elliptic curves in class 257400.j do not have complex multiplication.

Modular form 257400.2.a.j

sage: E.q_eigenform(10)
 
\(q - 4 q^{7} - q^{11} + q^{13} + 4 q^{17} - 2 q^{19} + O(q^{20})\) Copy content Toggle raw display

Isogeny matrix

sage: E.isogeny_class().matrix()
 

The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the LMFDB numbering.

\(\left(\begin{array}{rr} 1 & 2 \\ 2 & 1 \end{array}\right)\)

Isogeny graph

sage: E.isogeny_graph().plot(edge_labels=True)
 

The vertices are labelled with LMFDB labels.