What are the factors of ?
Calculate the factors of the given number.
A factor is defined as a number that divides the given number leaving zero as the remainder. Since every no. is divisible to itself and therefore these the number itself and are trivial factor of any given number.
Numbers which have no other factor except the trivial factors are called prime number is a number which have exactly two factors.
Since, has exactly two factors. Therefore, is a prime number.