Prime numbers

Prime numbers are numbers that are defined by their factors. Prime numbers only has 2 factors, one and itself. Prime numbers are very useful in mathematics and math students should be familiar with prime numbers.

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What is a prime number? What are prime numbers?

A prime number is a counting number that can be divided evenly by only two numbers which is one and itself. A prime number can be described as a number with exactly two factors, 1 and itself (prime factor).

Is 1 a prime number?

Based on the definition of prime numbers above, 1 is not a prime number since the only factor 1 has is itself. A prime number needs 2 factors, 1 and itself. Therefore, 1 is not a prime number.

List of prime numbers

Below is a list of prime numbers or the first 100 prime numbers.

• 2  3  5  7 
• 11  13  17  19 
• 23  29 
• 31  37 
• 41  43  47 
• 53  59 
• 61  67 
• 71  73  79 
• 83  89 
• 97