![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
If the greatest common factor of two or more numbers is 1, then they are
\relatively prime.
\Greatest common factor (GCF) is a number that is greatest among the
\common factors of the numbers.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
List the factors of each number.
\Factors of 11: 11
\Factors of 51: 3, 17, 51
\Identify the greatest common factor.
\There are no common prime factors.
\Two numbers always have 1 as a common factor.
\Since the GCF is 1, 11 and 51 are relatively prime.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
There are no common prime factors.
\Two numbers always have 1 as a common factor. So, the GCF is 1.
\11 and 51 are relatively prime.