1 is a factor of 18; neither 1 nor 18 is prime.
18 is not a prime number so no number can have 18 as a prime factor.
Yes, they are. 5 is the only prime factor of 25 and 5 is not a factor of 18, so they have no prime factors in common, which is what relatively prime means.
18 has two prime factors: 2 and 3.
The common prime factor of 171 and 18 is 3.
18 has two prime factors: 2 and 3
5 + 2 = 7
There are no prime factors in that equation.
largest prime factor of 18 & 24 = 3factors of :18= 1, 3, 6, 9, 1824= 1, 2, 3,4, 6, 8, 12, 24,prime factors of 18 & 24 = 2, 3largest prime factor of 18 & 24 = 3
As a product of its prime factors it is: 223*3 = 36
18 and 81 share only one prime factor: 3
3 and 9 are factors of 18. 3 is prime, 9 isn't.