Stuff

<?php
$num = 1000000000000000000000000000000;
$cycles = 0;
while(strlen($num) == 31)
{
	$isprime = 1;
	for($i=2;$i<$num;$i++)
	{
		if(($num % $i) == 0)
		{
			$isprime = 0;
		}
	}
	if($isprime == 1) break;
	$num++;
	$cycles++;
}
echo 'The lowest 31 digit prime number is '.$num.' ('.$cycles.' cycles)';
?>