Question

highest common factor of 17 and 19

Answer 1

17 and 19 are prime numbers
So HCF is 1

Answer 2

Hey mate I hope this will help you if so then pls mark me as brainliest

The Highest common factor ( HCF )
Of two prime numbers is 1 because prime numbers doesn't any other factor except themselves and 1. So for all primes the HCF is 1.
17 and 19 are primes so the HCF of both the numbers is 1.