9
The only prime factor of 4 is 2. No prime number is a multiple of 5.
The answer is 9. It is a multiple of 3. 3+3+3=9. It is less than 20: 20-9=11.It is not a prime number. It is odd, and it is not a factor of 30. 30/9=3.3333333333
If 21 is a multiple of the number, the number cannot have 90 as a factor.
A multiple of 13 will be a composite number. Because the number will have 13 as a factor, it cannot be a prime number.
no because 6 is already a composite number. it's multiple can't be a prime number.
7
No multiple of 86 is in that range. 43 is a prime number that is a factor of 86.
The answer depends on whether or not the prime number is a factor of the other number.If the prime number is a factor of the other number then the GCF is the prime, otherwise the GCF is 1.
A factor can or cannot be a prime number Ex: 2 is the factor of all other even numbers its a prime number but 9 is a factor of 18 and its not a prime number A prime is a factor but a factor being a prime number varies
Usually it's 1, unless the composite number is a multiple of the prime number. Then, it's the prime number.
No - nor is it a factor of 7.
Since 5 is a prime number it would probably not be a multiple of anything - so we would generally think of it as a factor.