Find the smallest positive integer $a$ such that $x^4 + a^2$ is not prime for any integer $x.$
Question:
Find the smallest positive integer $a$ such that $x^4 + a^2$ is not prime for any integer $x.$
Answer:
Let's think step by step.

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Find the smallest positive integer $a$ such that $x^4 + a^2$ is not prime for any integer $x.$
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