339126523890

This number is a composite.

                                                               33 9126523890

+ The first eight cyclotomic polynomials n - 1, n + 1, n2 + n + 1, n2 + 1, n4 + n3 + n2 + n + 1, n2 - n + 1, n6 + n5 + n4 + n3 + n2 + n + 1 and n4 + 1 evaluate to prime numbers when n = 339126523890, and for no smaller positive integer n. [Hartley]

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