# 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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