Answer: 2 X 3 X 5 X 7
Step-by-step explanation:
The given number to find the prime factorization =210
We know that 210 can be written as 
Also , 21 can be written as
.
And 10 can be written as 
Then , the prime factorization of 210 is given by :-

Hence, the prime factorization of 210= 2 X 3 X 5 X 7