Elliptic curve isogeny class with Cremona label 81312bx (LMFDB label 81312.bx)

• Label: 81312bx
• Number of curves: $2$
• Conductor: $81312$
• CM: no
• Rank: $1$

Rank

The elliptic curves in class 81312bx have rank \(1\).

L-function data

Bad L-factors:

Prime	L-Factor
\(2\)	\(1\)
\(3\)	\(1 - T\)
\(7\)	\(1 - T\)
\(11\)	\(1\)

Good L-factors:

Prime	L-Factor	Isogeny Class over \(\mathbb{F}_p\)
\(5\)	\( 1 - 4 T + 5 T^{2}\)	1.5.ae
\(13\)	\( 1 + 6 T + 13 T^{2}\)	1.13.g
\(17\)	\( 1 + 17 T^{2}\)	1.17.a
\(19\)	\( 1 + 2 T + 19 T^{2}\)	1.19.c
\(23\)	\( 1 + 4 T + 23 T^{2}\)	1.23.e
\(29\)	\( 1 - 2 T + 29 T^{2}\)	1.29.ac
$\cdots$	$\cdots$	$\cdots$

See L-function page for more information

Complex multiplication

The elliptic curves in class 81312bx do not have complex multiplication.

Modular form 81312.2.a.bx

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 Cremona numbering.

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

Isogeny graph

The vertices are labelled with Cremona labels.

Elliptic curves in class 81312bx

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
81312.bx2	81312bx1	\([0, 1, 0, 1654, -35928]\)	\(4410944/7623\)	\(-864295008192\)	\([2]\)	\(153600\)	\(0.97535\)	\(\Gamma_0(N)\)-optimal
81312.bx1	81312bx2	\([0, 1, 0, -11656, -381988]\)	\(193100552/43659\)	\(39600425829888\)	\([2]\)	\(307200\)	\(1.3219\)