Question

Is $343$ a prime number?

Answer 1

Identify the prime number :

Prime numbers are the number greater than $1$ such that it is not divisible by any number less that that number.

The prime factors of $343$ are

$343=7\times 7\times 7$

Therefore, $343$ can be divided by $7$, $7^2$

Hence, $343$ is not a prime number