Question: what is the greatest common factor between 14 and 45?
Answer: The prime factorization of 14 is: 2 x 7. The prime factorization of 45 is: 3 x 3 x 5. The prime factors and multiplicities 14 and 45 have in common are: 1. 1 is the gcf of 14 and 45. gcf(14,45) = 1.