Prime factorization of $$$1388$$$
Your Input
Find the prime factorization of $$$1388$$$.
Solution
Start with the number $$$2$$$.
Determine whether $$$1388$$$ is divisible by $$$2$$$.
It is divisible, thus, divide $$$1388$$$ by $$${\color{green}2}$$$: $$$\frac{1388}{2} = {\color{red}694}$$$.
Determine whether $$$694$$$ is divisible by $$$2$$$.
It is divisible, thus, divide $$$694$$$ by $$${\color{green}2}$$$: $$$\frac{694}{2} = {\color{red}347}$$$.
The prime number $$${\color{green}347}$$$ has no other factors then $$$1$$$ and $$${\color{green}347}$$$: $$$\frac{347}{347} = {\color{red}1}$$$.
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: $$$1388 = 2^{2} \cdot 347$$$.
Answer
The prime factorization is $$$1388 = 2^{2} \cdot 347$$$A.