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Label Class Base field Conductor norm Rank Torsion CM Sato-Tate Regulator Period Leading coeff j-invariant Weierstrass coefficients Weierstrass equation
4.1-c3 4.1-c \(\Q(\sqrt{209}) \) \( 2^{2} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $2.636252383$ 4.102951284 \( \frac{24345866052441}{1073741824} a - \frac{46176275773215}{268435456} \) \( \bigl[1\) , \( -1\) , \( 1\) , \( -25 a - 171\) , \( 132 a + 887\bigr] \) ${y}^2+{x}{y}+{y}={x}^{3}-{x}^{2}+\left(-25a-171\right){x}+132a+887$
4.1-d3 4.1-d \(\Q(\sqrt{209}) \) \( 2^{2} \) 0 $\Z/2\Z$ $\mathrm{SU}(2)$ $1$ $8.606301134$ 0.297655148 \( \frac{24345866052441}{1073741824} a - \frac{46176275773215}{268435456} \) \( \bigl[1\) , \( -1\) , \( 0\) , \( 1485209680 a - 11478318473\) , \( -83988775088712 a + 649100205595989\bigr] \) ${y}^2+{x}{y}={x}^{3}-{x}^{2}+\left(1485209680a-11478318473\right){x}-83988775088712a+649100205595989$
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  *The rank, regulator and analytic order of Ш are not known for all curves in the database; curves for which these are unknown will not appear in searches specifying one of these quantities.