Properties

Label 1521.a
Number of curves $2$
Conductor $1521$
CM no
Rank $0$
Graph

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Show commands: SageMath
E = EllipticCurve("a1")
 
E.isogeny_class()
 

Elliptic curves in class 1521.a

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
1521.a1 1521e2 \([1, -1, 1, -114107, 82515372]\) \(-276301129/4782969\) \(-2844277153399283121\) \([]\) \(17472\) \(2.2221\)  
1521.a2 1521e1 \([1, -1, 1, -15242, -728958]\) \(-658489/9\) \(-5352009260481\) \([]\) \(2496\) \(1.2492\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 1521.a have rank \(0\).

Complex multiplication

The elliptic curves in class 1521.a do not have complex multiplication.

Modular form 1521.2.a.a

sage: E.q_eigenform(10)
 
\(q - q^{2} - q^{4} + q^{5} + 2 q^{7} + 3 q^{8} - q^{10} + 2 q^{11} - 2 q^{14} - q^{16} + 7 q^{17} - 6 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rr} 1 & 7 \\ 7 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.