Prime factorization of $$$3639$$$
Your Input
Find the prime factorization of $$$3639$$$.
Solution
Start with the number $$$2$$$.
Determine whether $$$3639$$$ is divisible by $$$2$$$.
Since it is not divisible, move to the next prime number.
The next prime number is $$$3$$$.
Determine whether $$$3639$$$ is divisible by $$$3$$$.
It is divisible, thus, divide $$$3639$$$ by $$${\color{green}3}$$$: $$$\frac{3639}{3} = {\color{red}1213}$$$.
The prime number $$${\color{green}1213}$$$ has no other factors then $$$1$$$ and $$${\color{green}1213}$$$: $$$\frac{1213}{1213} = {\color{red}1}$$$.
Since we have obtained $$$1$$$, we are done.
Now, just count the number of occurences of the divisors (green numbers), and write down the prime factorization: $$$3639 = 3 \cdot 1213$$$.
Answer
The prime factorization is $$$3639 = 3 \cdot 1213$$$A.