What is the equivalent of this JavaScript code in c#?
<p>I have this JavaScript file that I need to write in C#. I've done many but stuck on it. 
Could some body help me with this?</p>

<pre><code>var biginteger=new bigint(convert);
var mod = bigint_mod(biginteger, new bigint(97));
        var y = bigint_number(mod);
</code></pre>

<p>I am unable to interpret these JavaScript functions.</p>
