# Prime factorization of $2982$

The calculator will find the prime factorization of $2982$, with steps shown.

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Find the prime factorization of $2982$.

### Solution

Start with the number $2$.

Determine whether $2982$ is divisible by $2$.

It is divisible, thus, divide $2982$ by ${\color{green}2}$: $\frac{2982}{2} = {\color{red}1491}$.

Determine whether $1491$ is divisible by $2$.

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

The next prime number is $3$.

Determine whether $1491$ is divisible by $3$.

It is divisible, thus, divide $1491$ by ${\color{green}3}$: $\frac{1491}{3} = {\color{red}497}$.

Determine whether $497$ is divisible by $3$.

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

The next prime number is $5$.

Determine whether $497$ is divisible by $5$.

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

The next prime number is $7$.

Determine whether $497$ is divisible by $7$.

It is divisible, thus, divide $497$ by ${\color{green}7}$: $\frac{497}{7} = {\color{red}71}$.

The prime number ${\color{green}71}$ has no other factors then $1$ and ${\color{green}71}$: $\frac{71}{71} = {\color{red}1}$.

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: $2982 = 2 \cdot 3 \cdot 7 \cdot 71$.

The prime factorization is $2982 = 2 \cdot 3 \cdot 7 \cdot 71$A.