Question

How 101 is prime number and how 201 is not a prime number? Please explain in detail.​

Answer 1

101 is a prime number because it has only 2 factors and that is 1 and itself(101).
But 201 has more than 2 factors.

Answer 2

101 is prime number because it is only divisible by 1 and number itself but 201 is divisible by 1,67 and 3 so,it is not a prime number.