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The results below are complete, since the LMFDB contains all elliptic curves with conductor norm at most 100000 over imaginary quadratic fields with absolute discriminant 4

Note: The completeness Only modular elliptic curves are included

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Results (displaying both matches)

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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
1186.2-a1 1186.2-a \(\Q(\sqrt{-1}) \) \( 2 \cdot 593 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.157078984$ $2.551253826$ 1.602993443 \( -\frac{438033487497}{1406596} a - \frac{120820883902}{351649} \) \( \bigl[1\) , \( 0\) , \( i + 1\) , \( -22 i\) , \( 24 i - 28\bigr] \) ${y}^2+{x}{y}+\left(i+1\right){y}={x}^{3}-22i{x}+24i-28$
1186.2-a2 1186.2-a \(\Q(\sqrt{-1}) \) \( 2 \cdot 593 \) $1$ $\Z/2\Z$ $\mathrm{SU}(2)$ $0.078539492$ $5.102507653$ 1.602993443 \( -\frac{199525}{593} a + \frac{10019039}{9488} \) \( \bigl[i\) , \( 0\) , \( i + 1\) , \( -2 i + 1\) , \( -i\bigr] \) ${y}^2+i{x}{y}+\left(i+1\right){y}={x}^{3}+\left(-2i+1\right){x}-i$
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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.