Elliptic curve isogeny class with LMFDB label 21312.bn (Cremona label 21312bq)

• Label: 21312.bn
• Number of curves: $3$
• Conductor: $21312$
• CM: no
• Rank: $1$

Rank

The elliptic curves in class 21312.bn have rank \(1\).

L-function data

Bad L-factors:

Prime	L-Factor
\(2\)	\(1\)
\(3\)	\(1\)
\(37\)	\(1 + T\)

Good L-factors:

Prime	L-Factor	Isogeny Class over \(\mathbb{F}_p\)
\(5\)	\( 1 + 5 T^{2}\)	1.5.a
\(7\)	\( 1 - T + 7 T^{2}\)	1.7.ab
\(11\)	\( 1 + 3 T + 11 T^{2}\)	1.11.d
\(13\)	\( 1 - 4 T + 13 T^{2}\)	1.13.ae
\(17\)	\( 1 + 6 T + 17 T^{2}\)	1.17.g
\(19\)	\( 1 - 2 T + 19 T^{2}\)	1.19.ac
\(23\)	\( 1 - 6 T + 23 T^{2}\)	1.23.ag
\(29\)	\( 1 + 6 T + 29 T^{2}\)	1.29.g
$\cdots$	$\cdots$	$\cdots$

See L-function page for more information

Complex multiplication

The elliptic curves in class 21312.bn do not have complex multiplication.

Modular form 21312.2.a.bn

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.

\(\left(\begin{array}{rrr} 1 & 3 & 9 \\ 3 & 1 & 3 \\ 9 & 3 & 1 \end{array}\right)\)

Isogeny graph

The vertices are labelled with LMFDB labels.

Elliptic curves in class 21312.bn

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
21312.bn1	21312bq3	\([0, 0, 0, -67440, -6741002]\)	\(727057727488000/37\)	\(1726272\)	\([]\)	\(25920\)	\(1.1180\)
21312.bn2	21312bq2	\([0, 0, 0, -840, -9074]\)	\(1404928000/50653\)	\(2363266368\)	\([]\)	\(8640\)	\(0.56866\)
21312.bn3	21312bq1	\([0, 0, 0, -120, 502]\)	\(4096000/37\)	\(1726272\)	\([]\)	\(2880\)	\(0.019349\)	\(\Gamma_0(N)\)-optimal