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Label Class Base field Conductor norm Rank Torsion CM Regulator Period Leading coeff j-invariant Weierstrass coefficients Weierstrass equation
27900.2-b2 27900.2-b \(\Q(\sqrt{-3}) \) \( 2^{2} \cdot 3^{2} \cdot 5^{2} \cdot 31 \) $0$ $\Z/2\Z$ $1$ $0.632407466$ 2.920964966 \( -\frac{271496126491}{9610000} a + \frac{721597679759}{48050000} \) \( \bigl[a + 1\) , \( -a - 1\) , \( a + 1\) , \( 198 a - 219\) , \( -1413 a + 867\bigr] \) ${y}^2+\left(a+1\right){x}{y}+\left(a+1\right){y}={x}^{3}+\left(-a-1\right){x}^{2}+\left(198a-219\right){x}-1413a+867$
96100.3-a2 96100.3-a \(\Q(\sqrt{-3}) \) \( 2^{2} \cdot 5^{2} \cdot 31^{2} \) $1$ $\Z/2\Z$ $0.749224077$ $0.196732798$ 3.403986729 \( -\frac{271496126491}{9610000} a + \frac{721597679759}{48050000} \) \( \bigl[1\) , \( a + 1\) , \( 0\) , \( 1829 a + 571\) , \( -15105 a + 44100\bigr] \) ${y}^2+{x}{y}={x}^{3}+\left(a+1\right){x}^{2}+\left(1829a+571\right){x}-15105a+44100$
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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.