Question: what is the greatest common factor between 8 and 35?
Answer: The prime factorization of 35 is: 5 x 7.
The prime factorization of 8 is: 2 x 2 x 2.
The prime factors and multiplicities 35 and 8 have in common are: 1.
1 is the gcf of 35 and 8.
gcf(35,8) = 1.