title: What's the time complexity of this while loop?
body: <pre><code>while(n&gt;x) 
    x*=x;
  </code></pre>
  
  <p>The correct answer is log(log(n)), I can see the log(n) since x^k>=n is when the while loop will stop. so I got to log(n), what am I missing?</p>
  
  <p>P.S: it is given that x=2.</p>