This number is a composite.

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247757 is the value of A in the Eulerian trinomial: x^2 + x + A that has the record of primes in the first 1000 values of x (x = 0,1,2,...,999). It produces 657 primes. [Ludovicus]

Submitted: 2009-07-29 08:24:14;   Last Modified: 2011-10-27 07:55:12.
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