Elliptic curve isogeny class with LMFDB label 493680.dx (Cremona label 493680dx)

• Label: 493680.dx
• Number of curves: $4$
• Conductor: $493680$
• CM: no
• Rank: $2$

Elliptic curves in class 493680.dx

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
493680.dx1	493680dx4	\([0, 1, 0, -12663416, -17348995116]\)	\(30949975477232209/478125000\)	\(3469425062400000000\)	\([2]\)	\(23592960\)	\(2.6926\)
493680.dx2	493680dx2	\([0, 1, 0, -815096, -254239020]\)	\(8253429989329/936360000\)	\(6794522042204160000\)	\([2, 2]\)	\(11796480\)	\(2.3461\)
493680.dx3	493680dx1	\([0, 1, 0, -195576, 29005524]\)	\(114013572049/15667200\)	\(113686120444723200\)	\([2]\)	\(5898240\)	\(1.9995\)	\(\Gamma_0(N)\)-optimal^*
493680.dx4	493680dx3	\([0, 1, 0, 1120904, -1277221420]\)	\(21464092074671/109596256200\)	\(-795264832429785907200\)	\([2]\)	\(23592960\)	\(2.6926\)

^*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 0 curves highlighted, and conditionally curve 493680.dx1.

Rank

The elliptic curves in class 493680.dx have rank \(2\).

Complex multiplication

The elliptic curves in class 493680.dx do not have complex multiplication.

Modular form 493680.2.a.dx

Isogeny 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.

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

Isogeny graph

The vertices are labelled with LMFDB labels.