What is the Greatest Common Factor of 30615 and 30621?

Greatest common factor (GCF) of 30615 and 30621 is 3.

GCF(30615,30621) = 3

We will now calculate the prime factors of 30615 and 30621, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 30615 and 30621.

How to find the GCF of 30615 and 30621?

We will first find the prime factorization of 30615 and 30621. After we will calculate the factors of 30615 and 30621 and find the biggest common factor number .

Step-1: Prime Factorization of 30615

Prime factors of 30615 are 3, 5, 13, 157. Prime factorization of 30615 in exponential form is:

30615 = 3¹ × 5¹ × 13¹ × 157¹

Step-2: 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-3: Factors of 30615

List of positive integer factors of 30615 that divides 30615 without a remainder.

1, 3, 5, 13, 15, 39, 65, 157, 195, 471, 785, 2041, 2355, 6123, 10205

Step-4: Factors of 30621

List of positive integer factors of 30621 that divides 30615 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 30615 and 30621. The biggest common factor number is the GCF number.
So the greatest common factor 30615 and 30621 is 3.

Also check out the Least Common Multiple of 30615 and 30621