Saturday, 8 November 2014

Square root of a Mersenne number is irrational

Defining a Mersenne Number like this:



k = $2^n -1$



I have to prove that the square root of a Mersenne number is irrational (has no solution in $\mathbb Q$). I know that it can be proven that the square root of a non-perfect square number is always irrational, but is there a particular proof for a Mersenne Number?

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