What is the Greatest Common Factor of 1020 and 1024?

Greatest common factor (GCF) of 1020 and 1024 is 4.

GCF(1020,1024) = 4

We will now calculate the prime factors of 1020 and 1024, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1020 and 1024.

How to find the GCF of 1020 and 1024?

We will first find the prime factorization of 1020 and 1024. After we will calculate the factors of 1020 and 1024 and find the biggest common factor number .

Step-1: Prime Factorization of 1020

Prime factors of 1020 are 2, 3, 5, 17. Prime factorization of 1020 in exponential form is:

1020 = 2² × 3¹ × 5¹ × 17¹

Step-2: Prime Factorization of 1024

Prime factors of 1024 are 2. Prime factorization of 1024 in exponential form is:

1024 = 2¹⁰

Step-3: Factors of 1020

List of positive integer factors of 1020 that divides 1020 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510

Step-4: Factors of 1024

List of positive integer factors of 1024 that divides 1020 without a remainder.

1, 2, 4, 8, 16, 32, 64, 128, 256, 512

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1020 and 1024. The biggest common factor number is the GCF number.
So the greatest common factor 1020 and 1024 is 4.

Also check out the Least Common Multiple of 1020 and 1024