Which number is prime? 26 or 9 or 5 or 6

Question

which number is prime?

Answer 1

A prime number is a number that the only whole numbers that are divisible by it are the number one and itself. 

 

26 = 1*26, 2*13

9 = 1*9, 3*3

5 = 1*5

6 = 1*6, 2*3

 

5 is the only one on this list that is prime.