The number 7 has no factors.
Note : There does not exist any number without any factors. 1 and the number itself are the two factors for any given number
Which of the following numbers has both 7 and 5 as factors?
A number a has 7 as its smallest prime factor, and another number b has 3 as its smallest prime factor. What is the smallest prime factor of the number a−b?
A number a has 7 as its smallest prime factor, and another number b has 3 as its smallest prime factor. What is the smallest prime factor of the number a+b?