Question

Are all prime numbers odd?

Answer 1

Hint: A prime number can be expressed as the positive number which is having exactly two factors. If “n” is the prime number then it has only two factors that is the number itself “n” and the number here, we will find the prime numbers for first hundred numbers.

Complete step-by-step answer:
Always remember that number one is neither prime nor composite number. Even number two is the only prime number which is an even number.
Find the first twenty-five numbers –
$2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,61,67,71,73,79,83,89,97$
From the above prime numbers, we can say that all prime numbers except number two is the prime number.

Note: Prime factorization can be defined as the process of finding which prime numbers can be multiplied together to make the original number, where prime numbers are expressed as the numbers greater than $1$ and which are not the product of any two smaller natural numbers. For Example: $2,{\text{ 3, 5, 7,}}......$ $2$ is the prime number as it can have only $1$ factor. Prime factorization can be done by using a long division method or factor tree method.