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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
8.2-b1 8.2-b \(\Q(\sqrt{129}) \) \( 2^{3} \) $1$ $\mathsf{trivial}$ $\mathrm{SU}(2)$ $6.235527253$ $1.771317458$ 1.944933359 \( -\frac{47232606203}{8} a - \frac{244609748133}{8} \) \( \bigl[a + 1\) , \( 1\) , \( 0\) , \( 17379 a - 107319\) , \( 2996015 a - 18512003\bigr] \) ${y}^2+\left(a+1\right){x}{y}={x}^{3}+{x}^{2}+\left(17379a-107319\right){x}+2996015a-18512003$
8.2-c1 8.2-c \(\Q(\sqrt{129}) \) \( 2^{3} \) 0 $\Z/3\Z$ $\mathrm{SU}(2)$ $1$ $29.10944917$ 2.562944090 \( -\frac{47232606203}{8} a - \frac{244609748133}{8} \) \( \bigl[a + 1\) , \( -a + 1\) , \( a + 1\) , \( -869257 a - 4501774\) , \( 1049040547 a + 5432884883\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a+1\right){x}^{2}+\left(-869257a-4501774\right){x}+1049040547a+5432884883$
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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.