# Prime factorization of $2169$

The calculator will find the prime factorization of $2169$, with steps shown.

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Find the prime factorization of $2169$.

### Solution

Start with the number $2$.

Determine whether $2169$ is divisible by $2$.

Since it is not divisible, move to the next prime number.

The next prime number is $3$.

Determine whether $2169$ is divisible by $3$.

It is divisible, thus, divide $2169$ by ${\color{green}3}$: $\frac{2169}{3} = {\color{red}723}$.

Determine whether $723$ is divisible by $3$.

It is divisible, thus, divide $723$ by ${\color{green}3}$: $\frac{723}{3} = {\color{red}241}$.

The prime number ${\color{green}241}$ has no other factors then $1$ and ${\color{green}241}$: $\frac{241}{241} = {\color{red}1}$.

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: $2169 = 3^{2} \cdot 241$.

The prime factorization is $2169 = 3^{2} \cdot 241$A.