1023

This number is a composite.

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The smallest example of M(x), i.e., a Mersenne number, where M(x) = 3 * M(x/2) * p, where M(x/2) and p are prime. This is M(10) = 3 * M(5) * p, or 1023 = 3 * 31 * 11. [Ganfield]

Submitted: 2017-09-18 14:31:10;   Last Modified: 2019-04-29 20:17:27.
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