What is the Greatest Common Factor of 481 and 489?

Greatest common factor (GCF) of 481 and 489 is 1.

GCF(481,489) = 1

We will now calculate the prime factors of 481 and 489, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 481 and 489.

How to find the GCF of 481 and 489?

We will first find the prime factorization of 481 and 489. After we will calculate the factors of 481 and 489 and find the biggest common factor number .

Step-1: Prime Factorization of 481

Prime factors of 481 are 13, 37. Prime factorization of 481 in exponential form is:

481 = 13¹ × 37¹

Step-2: Prime Factorization of 489

Prime factors of 489 are 3, 163. Prime factorization of 489 in exponential form is:

489 = 3¹ × 163¹

Step-3: Factors of 481

List of positive integer factors of 481 that divides 481 without a remainder.

1, 13, 37

Step-4: Factors of 489

List of positive integer factors of 489 that divides 481 without a remainder.

1, 3, 163

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 481 and 489. The biggest common factor number is the GCF number.
So the greatest common factor 481 and 489 is 1.

Also check out the Least Common Multiple of 481 and 489