Properties

Label 221760.a
Number of curves $2$
Conductor $221760$
CM no
Rank $1$
Graph

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

Elliptic curves in class 221760.a

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
221760.a1 221760nr2 \([0, 0, 0, -43308, -3417552]\) \(1740992427/29645\) \(152961688535040\) \([2]\) \(983040\) \(1.5194\)  
221760.a2 221760nr1 \([0, 0, 0, -108, -151632]\) \(-27/1925\) \(-9932577177600\) \([2]\) \(491520\) \(1.1728\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 221760.a have rank \(1\).

Complex multiplication

The elliptic curves in class 221760.a do not have complex multiplication.

Modular form 221760.2.a.a

sage: E.q_eigenform(10)
 
\(q - q^{5} - q^{7} - q^{11} - 6 q^{13} - 6 q^{17} + 4 q^{19} + O(q^{20})\) 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.