65537

This number is a prime.

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+ The largest non-titanic prime of form n^(2*n) + 1, (case n = 4). [Loungrides]

+ The smallest octavan prime (form x^8 + y^8), where x and y are distinct non-prime digits, i.e., 1^8 + 4^8 = 65537. [Loungrides]

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