Because 7 is a factor of 28 and 63 and 7 is a prime number.
No, 1 is not a prime number.
It is: 7
7
2 and 7
Yes it's a factor of 28 for example and it's a prime number
The least common prime factor of 24 and 28 is 2.
Prime factor each number. Circle all the prime common factors then, multiply them 28=2x2x7 32=2x2x2x2x2 GCF=2x2=4
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
28 has two prime factors: 2 and 7.
28 (22*7)
13 is a prime number. The only prime factor of a prime number is the number itself.