Question: what is the greatest common factor between 49 and 14?
Answer: The prime factorization of 14 is: 2 x 7.
The prime factorization of 49 is: 7 x 7.
The prime factors and multiplicities 14 and 49 have in common are: 7.
7 is the gcf of 14 and 49.
gcf(14,49) = 7.