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Label Base field Conductor norm Conductor label Isogeny class Weierstrass coefficients
4.1-a1 \(\Q(\sqrt{209}) \) 4 4.1 4.1-a \( \bigl[1\) , \( -1\) , \( a\) , \( -403 a - 2708\) , \( -267565 a - 1800300\bigr] \)
4.1-b1 \(\Q(\sqrt{209}) \) 4 4.1 4.1-b \( \bigl[1\) , \( -1\) , \( a + 1\) , \( 402 a - 3111\) , \( 267564 a - 2067865\bigr] \)


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