This number is a composite.

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8! = 40320 is the smallest factorial that can be expressed as a sum of distinct squared primes: 2^2+3^2+5^2+7^2+11^2+13^2+17^2+19^2+23^2+29^2+41^2+59^2+181^2. Found by Dmitry Kamenetsky. [Rivera]

Submitted: 2019-07-20 07:25:57;   Last Modified: 2019-07-20 12:23:15.
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