What is the Greatest Common Factor of 1015 and 1028?

Greatest common factor (GCF) of 1015 and 1028 is 1.

GCF(1015,1028) = 1

We will now calculate the prime factors of 1015 and 1028, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1015 and 1028.

How to find the GCF of 1015 and 1028?

We will first find the prime factorization of 1015 and 1028. After we will calculate the factors of 1015 and 1028 and find the biggest common factor number .

Step-1: Prime Factorization of 1015

Prime factors of 1015 are 5, 7, 29. Prime factorization of 1015 in exponential form is:

1015 = 5¹ × 7¹ × 29¹

Step-2: Prime Factorization of 1028

Prime factors of 1028 are 2, 257. Prime factorization of 1028 in exponential form is:

1028 = 2² × 257¹

Step-3: Factors of 1015

List of positive integer factors of 1015 that divides 1015 without a remainder.

1, 5, 7, 29, 35, 145, 203

Step-4: Factors of 1028

List of positive integer factors of 1028 that divides 1015 without a remainder.

1, 2, 4, 257, 514

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1015 and 1028. The biggest common factor number is the GCF number.
So the greatest common factor 1015 and 1028 is 1.

Also check out the Least Common Multiple of 1015 and 1028