What about x21?x^2 -1?

3213^2- 1 is not a prime number.

4214^2 -1 is not a prime number.

5215^2-1 is not a prime number.

6216^2 -1 is not a prime number.

7217^2 -1 is not a prime number.

8218^2 -1 is not a prime number.

Is it true that x21x^2 -1 is never a prime number for all positive integers x>2x \gt 2?

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