Elliptic curve isogeny class with LMFDB label 485520.b (Cremona label 485520b)

• Label: 485520.b
• Number of curves: $6$
• Conductor: $485520$
• CM: no
• Rank: $1$

Elliptic curves in class 485520.b

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
485520.b1	485520b5	\([0, -1, 0, -3028816, 2029849696]\)	\(62161150998242/1607445\)	\(79462020303267840\)	\([2]\)	\(10485760\)	\(2.3495\)	\(\Gamma_0(N)\)-optimal^*
485520.b2	485520b3	\([0, -1, 0, -196616, 29183616]\)	\(34008619684/4862025\)	\(120174043051238400\)	\([2, 2]\)	\(5242880\)	\(2.0029\)	\(\Gamma_0(N)\)-optimal^*
485520.b3	485520b2	\([0, -1, 0, -52116, -4109184]\)	\(2533446736/275625\)	\(1703146868640000\)	\([2, 2]\)	\(2621440\)	\(1.6564\)	\(\Gamma_0(N)\)-optimal^*
485520.b4	485520b1	\([0, -1, 0, -50671, -4373330]\)	\(37256083456/525\)	\(202755579600\)	\([2]\)	\(1310720\)	\(1.3098\)	\(\Gamma_0(N)\)-optimal^*
485520.b5	485520b4	\([0, -1, 0, 69264, -20519760]\)	\(1486779836/8203125\)	\(-202755579600000000\)	\([2]\)	\(5242880\)	\(2.0029\)
485520.b6	485520b6	\([0, -1, 0, 323584, 156944736]\)	\(75798394558/259416045\)	\(-12823905660712151040\)	\([2]\)	\(10485760\)	\(2.3495\)

^*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 4 curves highlighted, and conditionally curve 485520.b1.

Rank

The elliptic curves in class 485520.b have rank \(1\).

Complex multiplication

The elliptic curves in class 485520.b do not have complex multiplication.

Modular form 485520.2.a.b

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.

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

Isogeny graph

The vertices are labelled with LMFDB labels.