What is the Greatest Common Factor of 1003 and 1021?

Greatest common factor (GCF) of 1003 and 1021 is 1.

GCF(1003,1021) = 1

We will now calculate the prime factors of 1003 and 1021, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1003 and 1021.

How to find the GCF of 1003 and 1021?

We will first find the prime factorization of 1003 and 1021. After we will calculate the factors of 1003 and 1021 and find the biggest common factor number .

Step-1: Prime Factorization of 1003

Prime factors of 1003 are 17, 59. Prime factorization of 1003 in exponential form is:

1003 = 17¹ × 59¹

Step-2: Prime Factorization of 1021

Prime factors of 1021 are 1021. Prime factorization of 1021 in exponential form is:

1021 = 1021¹

Step-3: Factors of 1003

List of positive integer factors of 1003 that divides 1003 without a remainder.

1, 17, 59

Step-4: Factors of 1021

List of positive integer factors of 1021 that divides 1003 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1003 and 1021. The biggest common factor number is the GCF number.
So the greatest common factor 1003 and 1021 is 1.

Also check out the Least Common Multiple of 1003 and 1021