System of Sums Of Powers

Algebra Level 4

Given the following system of equations:

\[\begin{align} x + y + z &= 1\\ x^{2} + y^{2} + z^{2} &= 2\\
x^{3} + y^{3} + z^{3} &= 3, \end{align}\]

find the smallest positive integer value of \(n ~(> 3)\) such that \(x^{n} + y^{n} + z^{n}\) is an integer.

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