Find all the prime factors of 1729 and arrange them in ascending order. Also, state the relation, if any, between two constructive prime factors.

On checking with 3,5,7,9,11, 13 we find 13 is a factor
1729 = 13 * 133 again checking with 17, 13, 19, we find
= 13 * 19 * 7 = 7 * 13 * 19

ascending order 7<13<19
The prime factors have a difference of 6. So they are in arithmatic progression.