![modular arithmetic - What does $p≡3\mod4$ mean, and how do you find a prime matching this pattern? - Mathematics Stack Exchange modular arithmetic - What does $p≡3\mod4$ mean, and how do you find a prime matching this pattern? - Mathematics Stack Exchange](https://i.stack.imgur.com/wZE5S.png)
modular arithmetic - What does $p≡3\mod4$ mean, and how do you find a prime matching this pattern? - Mathematics Stack Exchange
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