What is the Greatest Common Factor of 9970 and 9980?

Greatest common factor (GCF) of 9970 and 9980 is 10.

GCF(9970,9980) = 10

We will now calculate the prime factors of 9970 and 9980, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9970 and 9980.

How to find the GCF of 9970 and 9980?

We will first find the prime factorization of 9970 and 9980. After we will calculate the factors of 9970 and 9980 and find the biggest common factor number .

Step-1: Prime Factorization of 9970

Prime factors of 9970 are 2, 5, 997. Prime factorization of 9970 in exponential form is:

9970 = 2¹ × 5¹ × 997¹

Step-2: Prime Factorization of 9980

Prime factors of 9980 are 2, 5, 499. Prime factorization of 9980 in exponential form is:

9980 = 2² × 5¹ × 499¹

Step-3: Factors of 9970

List of positive integer factors of 9970 that divides 9970 without a remainder.

1, 2, 5, 10, 997, 1994, 4985

Step-4: Factors of 9980

List of positive integer factors of 9980 that divides 9970 without a remainder.

1, 2, 4, 5, 10, 20, 499, 998, 1996, 2495, 4990

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9970 and 9980. The biggest common factor number is the GCF number.
So the greatest common factor 9970 and 9980 is 10.

Also check out the Least Common Multiple of 9970 and 9980