257

This number is a prime.

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The 257th, 258th, and 259th centuries are the smallest three consecutive centuries to have no years that are powers of other numbers, i.e., no squares, cubes, 4th powers, etc. [Gaydos]

Submitted: 2019-01-01 00:13:07;   Last Modified: 2019-01-01 07:27:24.
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