259

This number is a composite.

+ 259 = 7 x 37 and there are 7 primes between 7 and 37. [Beldon]

+ The product of first 259 even numbers plus 1, i.e., 2^259*259!+1 is the only non-titanic prime of form 2^n*n!+1 where n is an integer. [Loungrides]

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