Properties

Label 248430.ec
Number of curves $6$
Conductor $248430$
CM no
Rank $2$
Graph

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Show commands: SageMath
E = EllipticCurve("ec1")
 
E.isogeny_class()
 

Elliptic curves in class 248430.ec

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
248430.ec1 248430ec5 \([1, 0, 1, -139120973, 631580989106]\) \(524388516989299201/3150\) \(1788788143929150\) \([2]\) \(28311552\) \(2.9922\)  
248430.ec2 248430ec3 \([1, 0, 1, -8695223, 9867524006]\) \(128031684631201/9922500\) \(5634682653376822500\) \([2, 2]\) \(14155776\) \(2.6456\)  
248430.ec3 248430ec6 \([1, 0, 1, -8115553, 11239950698]\) \(-104094944089921/35880468750\) \(-20375414951942974218750\) \([2]\) \(28311552\) \(2.9922\)  
248430.ec4 248430ec4 \([1, 0, 1, -3064143, -1951516682]\) \(5602762882081/345888060\) \(196419193922112530460\) \([2]\) \(14155776\) \(2.6456\)  
248430.ec5 248430ec2 \([1, 0, 1, -579843, 132314158]\) \(37966934881/8643600\) \(4908434666941587600\) \([2, 2]\) \(7077888\) \(2.2990\)  
248430.ec6 248430ec1 \([1, 0, 1, 82637, 12802766]\) \(109902239/188160\) \(-106850278464034560\) \([2]\) \(3538944\) \(1.9525\) \(\Gamma_0(N)\)-optimal

Rank

sage: E.rank()
 

The elliptic curves in class 248430.ec have rank \(2\).

Complex multiplication

The elliptic curves in class 248430.ec do not have complex multiplication.

Modular form 248430.2.a.ec

sage: E.q_eigenform(10)
 
\(q - q^{2} + q^{3} + q^{4} + q^{5} - q^{6} - q^{8} + q^{9} - q^{10} - 4 q^{11} + q^{12} + q^{15} + q^{16} - 2 q^{17} - q^{18} - 4 q^{19} + O(q^{20})\) 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.

\(\left(\begin{array}{rrrrrr} 1 & 2 & 4 & 8 & 4 & 8 \\ 2 & 1 & 2 & 4 & 2 & 4 \\ 4 & 2 & 1 & 8 & 4 & 8 \\ 8 & 4 & 8 & 1 & 2 & 4 \\ 4 & 2 & 4 & 2 & 1 & 2 \\ 8 & 4 & 8 & 4 & 2 & 1 \end{array}\right)\)

Isogeny graph

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

The vertices are labelled with LMFDB labels.