Problem 291: Panaitopol Primes
A prime number p is called a Panaitopol prime if for some positive integersx and y.
Find how many Panaitopol primes are less than 5×1015.
Test
{{test}}Console output
A prime number p is called a Panaitopol prime if for some positive integersx and y.
Find how many Panaitopol primes are less than 5×1015.
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