Elliptic curve isogeny class with Cremona label 121605f (LMFDB label 121605.i)

• Label: 121605f
• Number of curves: $4$
• Conductor: $121605$
• CM: no
• Rank: $1$

Rank

The elliptic curves in class 121605f have rank \(1\).

L-function data

Bad L-factors:

Prime	L-Factor
\(3\)	\(1 - T\)
\(5\)	\(1 + T\)
\(11\)	\(1\)
\(67\)	\(1 + T\)

Good L-factors:

Prime	L-Factor	Isogeny Class over \(\mathbb{F}_p\)
\(2\)	\( 1 + 2 T^{2}\)	1.2.a
\(7\)	\( 1 + 7 T^{2}\)	1.7.a
\(13\)	\( 1 + 4 T + 13 T^{2}\)	1.13.e
\(17\)	\( 1 - 3 T + 17 T^{2}\)	1.17.ad
\(19\)	\( 1 + 3 T + 19 T^{2}\)	1.19.d
\(23\)	\( 1 + T + 23 T^{2}\)	1.23.b
\(29\)	\( 1 + 9 T + 29 T^{2}\)	1.29.j
$\cdots$	$\cdots$	$\cdots$

See L-function page for more information

Complex multiplication

The elliptic curves in class 121605f do not have complex multiplication.

Modular form 121605.2.a.f

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.

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

Isogeny graph

The vertices are labelled with Cremona labels.

Elliptic curves in class 121605f

LMFDB label	Cremona label	Weierstrass coefficients	j-invariant	Discriminant	Torsion structure	Modular degree	Faltings height	Optimality
121605.i3	121605f1	\([1, 1, 0, -17547, -713544]\)	\(337298881681/73571025\)	\(130335558620025\)	\([2]\)	\(706560\)	\(1.4222\)	\(\Gamma_0(N)\)-optimal
121605.i2	121605f2	\([1, 1, 0, -90752, 9871899]\)	\(46659888108001/3055325625\)	\(5412695719550625\)	\([2, 2]\)	\(1413120\)	\(1.7687\)
121605.i4	121605f3	\([1, 1, 0, 75623, 42181924]\)	\(26997300089999/448866220275\)	\(-795193890056599275\)	\([2]\)	\(2826240\)	\(2.1153\)
121605.i1	121605f4	\([1, 1, 0, -1428407, 656494326]\)	\(181938238527312721/863671875\)	\(1530047410546875\)	\([4]\)	\(2826240\)	\(2.1153\)