516961

This number is a composite.

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The smallest square that is the sum of the first n Honaker primes (131+263+457+ ...+13297+13327 = 516961). Note that 516961 = 719^2, and 719 is prime. [Bajpai]

Submitted: 2016-07-18 19:22:56; Last Modified: 2016-07-18 20:31:07.