What is the Greatest Common Factor of 30621 and 30639?

Greatest common factor (GCF) of 30621 and 30639 is 3.

GCF(30621,30639) = 3

We will now calculate the prime factors of 30621 and 30639, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30621 and 30639.

How to find the GCF of 30621 and 30639?

We will first find the prime factorization of 30621 and 30639. After we will calculate the factors of 30621 and 30639 and find the biggest common factor number .

Step-1: Prime Factorization of 30621

Prime factors of 30621 are 3, 59, 173. Prime factorization of 30621 in exponential form is:

30621 = 3¹ × 59¹ × 173¹

Step-2: Prime Factorization of 30639

Prime factors of 30639 are 3, 7, 1459. Prime factorization of 30639 in exponential form is:

30639 = 3¹ × 7¹ × 1459¹

Step-3: Factors of 30621

List of positive integer factors of 30621 that divides 30621 without a remainder.

1, 3, 59, 173, 177, 519, 10207

Step-4: Factors of 30639

List of positive integer factors of 30639 that divides 30621 without a remainder.

1, 3, 7, 21, 1459, 4377, 10213

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30621 and 30639. The biggest common factor number is the GCF number.
So the greatest common factor 30621 and 30639 is 3.

Also check out the Least Common Multiple of 30621 and 30639