What is the Greatest Common Factor of 2015 and 2028?

Greatest common factor (GCF) of 2015 and 2028 is 13.

GCF(2015,2028) = 13

We will now calculate the prime factors of 2015 and 2028, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 2015 and 2028.

How to find the GCF of 2015 and 2028?

We will first find the prime factorization of 2015 and 2028. After we will calculate the factors of 2015 and 2028 and find the biggest common factor number .

Step-1: Prime Factorization of 2015

Prime factors of 2015 are 5, 13, 31. Prime factorization of 2015 in exponential form is:

2015 = 5¹ × 13¹ × 31¹

Step-2: Prime Factorization of 2028

Prime factors of 2028 are 2, 3, 13. Prime factorization of 2028 in exponential form is:

2028 = 2² × 3¹ × 13²

Step-3: Factors of 2015

List of positive integer factors of 2015 that divides 2015 without a remainder.

1, 5, 13, 31, 65, 155, 403

Step-4: Factors of 2028

List of positive integer factors of 2028 that divides 2015 without a remainder.

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 169, 338, 507, 676, 1014

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 2015 and 2028. The biggest common factor number is the GCF number.
So the greatest common factor 2015 and 2028 is 13.

Also check out the Least Common Multiple of 2015 and 2028