This number is a composite.

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1761702690 is the start of a run of ten consecutive integers N such that all produce a prime P by applying the following rule: P = N + sum of the square of each digit in N, e.g., 1761702690 + 1^2+7^2+6^2+…+9^2+0^2 = 1761702947 is prime. [Rivera]

Submitted: 2019-01-21 09:53:33;   Last Modified: 2019-01-21 10:16:46.
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