Question: what is the greatest common factor for 14 and 55?
Answer: The prime factorization of 14 is: 2 x 7. The prime factorization of 55 is: 5 x 11. The prime factors and multiplicities 14 and 55 have in common are: 1. 1 is the gcf of 14 and 55. gcf(14,55) = 1.