<?php
 
$petla = fgets(STDIN);
for ($i = 0; $i<$petla; $i++)
{
	$qty_n = fgets(STDIN);
	$table = array_map("floatval", explode(" ", trim(fgets(STDIN))));
	$l1 = $table[0];
	if ($l1 != 0)
	{
		for ($j = 1; $j<$qty_n; $j++)
		{
			$l1 = NWW($l1, $table[$j]);
		}
		printf('%.0f', $l1);
		echo "\n";
		unset ($table);
	}
	else
	{
		echo $l1;
	}
}
 
function NWW($l1, $l2)
{
	$tmp1 = $l1;
	$tmp2 = $l2;
	if ($l1 != $l2)
	{
		while ($l2 <> 0)
			{
				$d = fmod($l1, $l2);
				$l1 = $l2;
				$l2 = $d;
			}
	}
	return ($tmp1*$tmp2)/$l1;
}

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

MwozCjIgMyA1CjMKNiA5IDE1CjUKMTU0MjEgMjM0MTI2IDMyMTM0MjcgMTIzNDIyMyAyMzEzNDEK

3
3
2 3 5
3
6 9 15
5
15421 234126 3213427 1234223 231341