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The Smallest Prime Number is

The smallest prime number is A. 1, B. 2, C. 3, D. 4. Find the answer to this question and access a vast question bank that is customized for students.

Q. The smallest prime number is

  1. 1
  2. 2
  3. 3
  4. 4

Answer: Correct Option is B. 2 

First we need to understand what the prime numbers are.

Prime number is any number that has only two factors, that is, it is only divisible by one and the number itself.

Let us try to check the above options one by one.

  1. In the number system 1 is the smallest non-zero number.

Also, the factor of 1 is 1. Hence, it has only one factor and that is 1.

  1. The following smallest number on the number line is 2.

Its factors are 1 and 2 itself. (1*2=2 and 2*1=2). This satisfies the prime number definition.

  1. Then it is 3 and it also has 2 factors, 1 and 3. But as it is a larger value from 2, hence cannot be considered as the smallest prime number.
  2. 4 is not a prime number as it has more than 2 factors, 1, 2, and 4.

Therefore, we can say that 2 is the smallest prime number.