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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
49.1-a1 49.1-a \(\Q(\zeta_{7})^+\) \( 7^{2} \) 0 $\Z/14\Z$ $-28$ $N(\mathrm{U}(1))$ $1$ $354.0802648$ 0.516151989 \( 16581375 \) \( \bigl[a^{2} - 2\) , \( a^{2} - a - 3\) , \( a + 1\) , \( 62 a^{2} - 26 a - 156\) , \( -380 a^{2} + 192 a + 886\bigr] \) ${y}^2+\left(a^{2}-2\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(a^{2}-a-3\right){x}^{2}+\left(62a^{2}-26a-156\right){x}-380a^{2}+192a+886$
49.1-a3 49.1-a \(\Q(\zeta_{7})^+\) \( 7^{2} \) 0 $\Z/2\Z$ $-28$ $N(\mathrm{U}(1))$ $1$ $7.226127854$ 0.516151989 \( 16581375 \) \( \bigl[1\) , \( -1\) , \( 0\) , \( -37\) , \( -78\bigr] \) ${y}^2+{x}{y}={x}^{3}-{x}^{2}-37{x}-78$
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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.