16 if the prime factors don't have to be distinct.
210 if they do.
All prime numbers only have one prime factor.
That would be 4, and 2; greatest common factor is 2.
How about 4 because 1 is not a prime or a composite number
4
The smallest prime number is 2.
No, 4 is not a prime number.
4, which is the square of the prime number 2, is the smallest composite number.
4
No. While 4 is a factor of 40, it is not a prime number.
The only prime factor of 4 is 2. No prime number is a multiple of 5.
The smallest prime factors are 2,3,5,7 thus the smallest number would be the product of these will be 210
4