What is the greatest common factor of 52 143 169?

To find the greatest common factor (GCF) of 52, 143, and 169, we need to first factorize each number. The factors of 52 are 1, 2, 4, 13, 26, and 52. The factors of 143 are 1, 11, 13, and 143. The factors of 169 are 1, 13, and 169. The common factor among these three numbers is 13, making it the greatest common factor.