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Are there any primes of the form 38^N+31?
This is a math question I found on another site (source), and it has been bugging me because I haven’t been able to determine the correct answer.
Simply put, is there a prime of the following form? If so, what is that prime?
p = 38^N + 31
(Where N is an integer.)
Computer calculations have not been able to solve this problem yet.