This number is a composite.

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Zhi-Wei Sun conjectured in March 2008 that any integer n > 636471 can be written as n = T + 2p, where T is a triangular number and p = 0 or a prime congruent to 1 (mod 4). [Capelle]

Submitted: 2008-09-06 09:24:57;   Last Modified: 2008-09-07 20:42:33.
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