What is the Greatest Common Factor of 980 and 997?

Greatest common factor (GCF) of 980 and 997 is 1.

GCF(980,997) = 1

We will now calculate the prime factors of 980 and 997, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 980 and 997.

How to find the GCF of 980 and 997?

We will first find the prime factorization of 980 and 997. After we will calculate the factors of 980 and 997 and find the biggest common factor number .

Step-1: Prime Factorization of 980

Prime factors of 980 are 2, 5, 7. Prime factorization of 980 in exponential form is:

980 = 2² × 5¹ × 7²

Step-2: Prime Factorization of 997

Prime factors of 997 are 997. Prime factorization of 997 in exponential form is:

997 = 997¹

Step-3: Factors of 980

List of positive integer factors of 980 that divides 980 without a remainder.

1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490

Step-4: Factors of 997

List of positive integer factors of 997 that divides 980 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 980 and 997. The biggest common factor number is the GCF number.
So the greatest common factor 980 and 997 is 1.

Also check out the Least Common Multiple of 980 and 997