title: What is the equivalent for bigint.pow(a) in Go?
body: <p>In my use case, I would like to know how the following Java code would be implemented in Go</p>
  
  <pre><code>BigInteger base = new BigInteger("16");
  int exponent = 1;
  BigInteger a = base.pow(exponent); //16^1 = 16
  </code></pre>
  
  <p>I am able to import the <code>math/big</code> package and create big integers, but not able to do <code>Pow()</code> function in Go. Also I don't find the function in the Go <a href="https://golang.org/pkg/math/big/" rel="noreferrer">doc</a>.</p>
  
  <p>Do I have to implement my own version of <code>Pow()</code> for bigint? Could anyone help me on this?</p>