What is the gcf of 34 51 102?

To find the greatest common factor (GCF) of 34, 51, and 102, we first need to find the prime factors of each number. The prime factors of 34 are 2 and 17, the prime factors of 51 are 3 and 17, and the prime factors of 102 are 2, 3, and 17. The GCF is the product of the common prime factors raised to the lowest power, which in this case is 17. Therefore, the GCF of 34, 51, and 102 is 17.