The prime factors for 66 is 2,3,11 but for the boxes put 2,33,3,11
Prime factors for 42 are 2,3,7 for the boxes put 2,21,3,7
63: 3,7 for boxes put 3,21,3,7
68: 2,34,17 for boxes put 2,34,2,7
92: 2,23 for boxes put 2,46,2,23
40: 2,5,10 for boxes put 2,20,2,10,5,5