Label Class Conductor Discriminant Rank* Torsion $\textrm{End}^0(J_{\overline\Q})$ Equation
676.a.562432.1 676.a $$2^{2} \cdot 13^{2}$$ $$2^{8} \cdot 13^{3}$$ $0$ $\Z/21\Z$ $$\Q \times \Q$$ $y^2 + (x^3 + 1)y = 2x^5 + 2x^4 + 4x^3 + 2x^2 + 2x$