What is the Greatest Common Factor of 1581 and 1589?

Greatest common factor (GCF) of 1581 and 1589 is 1.

GCF(1581,1589) = 1

We will now calculate the prime factors of 1581 and 1589, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1581 and 1589.

How to find the GCF of 1581 and 1589?

We will first find the prime factorization of 1581 and 1589. After we will calculate the factors of 1581 and 1589 and find the biggest common factor number .

Step-1: Prime Factorization of 1581

Prime factors of 1581 are 3, 17, 31. Prime factorization of 1581 in exponential form is:

1581 = 3¹ × 17¹ × 31¹

Step-2: Prime Factorization of 1589

Prime factors of 1589 are 7, 227. Prime factorization of 1589 in exponential form is:

1589 = 7¹ × 227¹

Step-3: Factors of 1581

List of positive integer factors of 1581 that divides 1581 without a remainder.

1, 3, 17, 31, 51, 93, 527

Step-4: Factors of 1589

List of positive integer factors of 1589 that divides 1581 without a remainder.

1, 7, 227

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1581 and 1589. The biggest common factor number is the GCF number.
So the greatest common factor 1581 and 1589 is 1.

Also check out the Least Common Multiple of 1581 and 1589