# 2521

This number is a prime.

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2521^{2}= 1456

^{3}- 1455

^{3}, i.e., one solution to the Diophantine equation z

^{2}= x

^{3}- y

^{3}. A Diophantine equation is a polynomial equation in which only integer solutions are allowed. These are named after the Greek algebraist Diophantus who lived in the 3rd century. [Mizuki]

Submitted: 2005-12-26 06:08:13; Last Modified: 2009-05-04 23:20:53.

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