Elliptic curve isogeny class with LMFDB label 20160.ca (Cremona label 20160bl)

• Label: 20160.ca
• Number of curves: $4$
• Conductor: $20160$
• CM: no
• Rank: $1$

Rank

The elliptic curves in class 20160.ca have rank \(1\).

L-function data

Bad L-factors:

Prime	L-Factor
\(2\)	\(1\)
\(3\)	\(1\)
\(5\)	\(1 + T\)
\(7\)	\(1 - T\)

Good L-factors:

Prime	L-Factor	Isogeny Class over \(\mathbb{F}_p\)
\(11\)	\( 1 + 11 T^{2}\)	1.11.a
\(13\)	\( 1 - 2 T + 13 T^{2}\)	1.13.ac
\(17\)	\( 1 + 6 T + 17 T^{2}\)	1.17.g
\(19\)	\( 1 - 4 T + 19 T^{2}\)	1.19.ae
\(23\)	\( 1 + 4 T + 23 T^{2}\)	1.23.e
\(29\)	\( 1 - 6 T + 29 T^{2}\)	1.29.ag
$\cdots$	$\cdots$	$\cdots$

See L-function page for more information

Complex multiplication

The elliptic curves in class 20160.ca do not have complex multiplication.

Modular form 20160.2.a.ca

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.

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

Isogeny graph

The vertices are labelled with LMFDB labels.

Elliptic curves in class 20160.ca

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
20160.ca1	20160bl4	\([0, 0, 0, -134508, 18987568]\)	\(5633270409316/14175\)	\(677221171200\)	\([2]\)	\(65536\)	\(1.5084\)
20160.ca2	20160bl3	\([0, 0, 0, -23628, -1023248]\)	\(30534944836/8203125\)	\(391910400000000\)	\([2]\)	\(65536\)	\(1.5084\)
20160.ca3	20160bl2	\([0, 0, 0, -8508, 289168]\)	\(5702413264/275625\)	\(3292047360000\)	\([2, 2]\)	\(32768\)	\(1.1618\)
20160.ca4	20160bl1	\([0, 0, 0, 312, 17512]\)	\(4499456/180075\)	\(-134425267200\)	\([2]\)	\(16384\)	\(0.81521\)	\(\Gamma_0(N)\)-optimal