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| is_prime | ||
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In the file is_prime there is a number. Write a C program and check whether it is a prime number of not.
It seems that Miller–Rabin primality test is a good simple test algorithm (probabilistic one) if the number is prime or not. Here is a pseudocode for it:
https://en.wikipedia.org/wiki/Miller%E2%80%93Rabin_primality_test