It's not binary!

How many prime numbers are there of the form: \(N=\frac{10^{2n}-1}{9\times x} \) where \(n\) is a natural number and \(x\) is a two digit number \( \overline{ab} \) whose digits are given by \(a = \text{gcd}(2017, 27) , b = \text{gcd}(2011,21) \).

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