What is the Greatest Common Factor of 15015 and 15021?

Greatest common factor (GCF) of 15015 and 15021 is 3.

GCF(15015,15021) = 3

We will now calculate the prime factors of 15015 and 15021, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15015 and 15021.

How to find the GCF of 15015 and 15021?

We will first find the prime factorization of 15015 and 15021. After we will calculate the factors of 15015 and 15021 and find the biggest common factor number .

Step-1: Prime Factorization of 15015

Prime factors of 15015 are 3, 5, 7, 11, 13. Prime factorization of 15015 in exponential form is:

15015 = 3¹ × 5¹ × 7¹ × 11¹ × 13¹

Step-2: Prime Factorization of 15021

Prime factors of 15021 are 3, 1669. Prime factorization of 15021 in exponential form is:

15021 = 3² × 1669¹

Step-3: Factors of 15015

List of positive integer factors of 15015 that divides 15015 without a remainder.

1, 3, 5, 7, 11, 13, 15, 21, 33, 35, 39, 55, 65, 77, 91, 105, 143, 165, 195, 231, 273, 385, 429, 455, 715, 1001, 1155, 1365, 2145, 3003, 5005

Step-4: Factors of 15021

List of positive integer factors of 15021 that divides 15015 without a remainder.

1, 3, 9, 1669, 5007

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15015 and 15021. The biggest common factor number is the GCF number.
So the greatest common factor 15015 and 15021 is 3.

Also check out the Least Common Multiple of 15015 and 15021