# Properties

 Label 409101bh Number of curves $2$ Conductor $409101$ CM no Rank $1$ Graph

# Related objects

Show commands for: SageMath
sage: E = EllipticCurve("409101.bh1")

sage: E.isogeny_class()

## Elliptic curves in class 409101bh

sage: E.isogeny_class().curves

LMFDB label Cremona label Weierstrass coefficients Torsion structure Modular degree Optimality
409101.bh2 409101bh1 [1, 1, 0, -58566, 9742671] [2] 2764800 $$\Gamma_0(N)$$-optimal*
409101.bh1 409101bh2 [1, 1, 0, -1130021, 461682390] [2] 5529600 $$\Gamma_0(N)$$-optimal*
*optimality has not been proved rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 2 curves highlighted, and conditionally curve 409101bh1.

## Rank

sage: E.rank()

The elliptic curves in class 409101bh have rank $$1$$.

## Modular form 409101.2.a.bh

sage: E.q_eigenform(10)

$$q + q^{2} - q^{3} - q^{4} - 2q^{5} - q^{6} - 3q^{8} + q^{9} - 2q^{10} + q^{12} + 2q^{13} + 2q^{15} - q^{16} + q^{18} + 4q^{19} + O(q^{20})$$

## Isogeny matrix

sage: E.isogeny_class().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

sage: E.isogeny_graph().plot(edge_labels=True)

The vertices are labelled with Cremona labels.