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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
43.1-a2 43.1-a 5.5.65657.1 \( 43 \) $1$ $\mathsf{trivial}$ $\mathrm{SU}(2)$ $0.234692176$ $624.7776116$ 2.86123519 \( -\frac{23968185390845}{79507} a^{4} - \frac{32340604970044}{79507} a^{3} + \frac{43993086493009}{79507} a^{2} + \frac{55492835852009}{79507} a + \frac{10232774495362}{79507} \) \( \bigl[-2 a^{4} + 3 a^{3} + 9 a^{2} - 8 a - 6\) , \( a^{4} - 2 a^{3} - 4 a^{2} + 7 a + 2\) , \( a + 1\) , \( 5 a^{4} - 3 a^{3} - 21 a^{2} - 3 a + 6\) , \( 9 a^{4} + 2 a^{3} - 40 a^{2} - 33 a - 4\bigr] \) ${y}^2+\left(-2a^{4}+3a^{3}+9a^{2}-8a-6\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{4}-2a^{3}-4a^{2}+7a+2\right){x}^{2}+\left(5a^{4}-3a^{3}-21a^{2}-3a+6\right){x}+9a^{4}+2a^{3}-40a^{2}-33a-4$
387.1-h2 387.1-h 5.5.65657.1 \( 3^{2} \cdot 43 \) $0 \le r \le 1$ $\mathsf{trivial}$ $\mathrm{SU}(2)$ $1$ $20.73764449$ 3.21180093 \( -\frac{23968185390845}{79507} a^{4} - \frac{32340604970044}{79507} a^{3} + \frac{43993086493009}{79507} a^{2} + \frac{55492835852009}{79507} a + \frac{10232774495362}{79507} \) \( \bigl[a^{3} - 4 a - 1\) , \( -a^{4} + 5 a^{2} - 2\) , \( a^{2} - 2\) , \( 8 a^{4} + a^{3} - 35 a^{2} - 29 a - 4\) , \( 60 a^{4} + 21 a^{3} - 268 a^{2} - 246 a - 44\bigr] \) ${y}^2+\left(a^{3}-4a-1\right){x}{y}+\left(a^{2}-2\right){y}={x}^{3}+\left(-a^{4}+5a^{2}-2\right){x}^{2}+\left(8a^{4}+a^{3}-35a^{2}-29a-4\right){x}+60a^{4}+21a^{3}-268a^{2}-246a-44$
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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.