Brute forces perhaps

I guess you all familiar with the Fibonacci sequence.

For those who haven't known this term yet, the Fibonacci sequence is a sequence of numbers which \(F(0)=0\), \(F(1)=1\) and for \(n \ge 2\), \(F(n)=F(n-1)+F(n-2)\).

So, here's my question:

If \(F(x)\) is the largest prime Fibonacci number where \(x \le 200\), find \(\left\lfloor \log _{ x }{ F(x) } \right\rfloor \).

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