Prime Number

Definition of a Prime Number

• A prime number is a positive integer that has exactly two factors, 1 and the number itself.

                 

Examples of Prime Number

• 2, 3, 5, 7, 11, 13, 17, 19, etc. are all prime numbers.
• There are infinitely many prime numbers.

               

Solved Example on Prime Number

           Is 41 a prime number?

Choices:

A. Yes

B. No

Correct Answer: A

Solution:

Step 1: The only divisors of 41 are 1 and 41. So, 41 is a prime number.

Related Terms for Prime Number

• Prime  
• Factor
• Divisor
• Positive Integer
• Prime Factorization

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