Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 5 [4] => 7 [5] => 11 [6] => 13 [7] => 17 [8] => 19 [9] => 23 [10] => 29 [11] => 31 [12] => 37 [13] => 41 [14] => 43 [15] => 47 )