# Eratóstenes

$$2017$$ is a prime number. To see that $$2017$$ is a prime number is sufficient to divide $$2017$$ by all prime numbers less than $$2017$$. However, this condition is not necessary. We can divide $$2017$$ until a largest prime number to make sure that $$2017$$ is really a prime number. What is this largest prime number?

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