### Instruction: What is the largest prime factor of 78?### Response: To find the largest prime factor of 78, I need to factor 78 into its prime factors.
I can start by dividing 78 by 2, the smallest prime factor, and get 39.
Then I can divide 39 by 3, another prime factor, and get 13.
13 is a prime number, so I can't factor it any further.
The prime factors of 78 are 2, 3, and 13.
The largest prime factor of 78 is 13.