Prime factorization of 19721

Prime factorization of 19721:

By prime factorization of 19721 we follow 5 simple steps:
1. We write number 19721 above a 2-column table
2. We divide 19721 by the smallest possible prime factor
3. We write down on the left side of the table the prime factor and next number to factorize on the ride side
4. We continue to factor in this fashion (we deal with odd numbers by trying small prime factors)
5. We continue until we reach 1 on the ride side of the table

19721
prime factors	number to factorize
13	1517
37	41
41	1

Prime factorization of 19721 = 1×13×37×41= $ 1 × 13 × 37 × 41 $