Find the missing numbers in the following prime factorisation

Explanation

The product of primes starts at the bottom of the factor tree and this product goes up to the top.
The upper box, on 3 and 13 is filled by the product of 3 and 13 , i.e., 39.
The upper next box on 2 and 39 will be filled by the product of 2 and 39,i.e., 78
The top most box on 2 and 78 will be filled by the product of 2 and 78,i.e., 156