Elliptic curve isogeny class with LMFDB label 21450.bm (Cremona label 21450bf)

• Label: 21450.bm
• Number of curves: $4$
• Conductor: $21450$
• CM: no
• Rank: $0$

Rank

The elliptic curves in class 21450.bm have rank \(0\).

L-function data

Bad L-factors:

Prime	L-Factor
\(2\)	\(1 + T\)
\(3\)	\(1 - T\)
\(5\)	\(1\)
\(11\)	\(1 - T\)
\(13\)	\(1 - T\)

Good L-factors:

Prime	L-Factor	Isogeny Class over \(\mathbb{F}_p\)
\(7\)	\( 1 - 4 T + 7 T^{2}\)	1.7.ae
\(17\)	\( 1 + 2 T + 17 T^{2}\)	1.17.c
\(19\)	\( 1 - 4 T + 19 T^{2}\)	1.19.ae
\(23\)	\( 1 + 23 T^{2}\)	1.23.a
\(29\)	\( 1 - 2 T + 29 T^{2}\)	1.29.ac
$\cdots$	$\cdots$	$\cdots$

See L-function page for more information

Complex multiplication

The elliptic curves in class 21450.bm do not have complex multiplication.

Modular form 21450.2.a.bm

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.

Elliptic curves in class 21450.bm

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
21450.bm1	21450bf4	\([1, 0, 1, -152651, 22943198]\)	\(25176685646263969/57915000\)	\(904921875000\)	\([2]\)	\(110592\)	\(1.5377\)
21450.bm2	21450bf2	\([1, 0, 1, -9651, 349198]\)	\(6361447449889/294465600\)	\(4601025000000\)	\([2, 2]\)	\(55296\)	\(1.1912\)
21450.bm3	21450bf1	\([1, 0, 1, -1651, -18802]\)	\(31824875809/8785920\)	\(137280000000\)	\([2]\)	\(27648\)	\(0.84458\)	\(\Gamma_0(N)\)-optimal
21450.bm4	21450bf3	\([1, 0, 1, 5349, 1339198]\)	\(1083523132511/50179392120\)	\(-784053001875000\)	\([2]\)	\(110592\)	\(1.5377\)