handling large number
<p>this is actually an problem question from project euler site
<a href="http://projecteuler.net/index.php?section=problems&amp;id=3" rel="nofollow">http://projecteuler.net/index.php?section=problems&amp;id=3</a></p>

<p>Anyway I'm not out after the solution, but I probably guess you will know what my approach is. To my question now, how do I handle numbers exceeding unsigned int?</p>

<p>Is there a mathematical approach for this, if so where can I read about it?</p>
