What is the Greatest Common Factor of 9955 and 9970?

Greatest common factor (GCF) of 9955 and 9970 is 5.

GCF(9955,9970) = 5

We will now calculate the prime factors of 9955 and 9970, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9955 and 9970.

How to find the GCF of 9955 and 9970?

We will first find the prime factorization of 9955 and 9970. After we will calculate the factors of 9955 and 9970 and find the biggest common factor number .

Step-1: Prime Factorization of 9955

Prime factors of 9955 are 5, 11, 181. Prime factorization of 9955 in exponential form is:

9955 = 5¹ × 11¹ × 181¹

Step-2: 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-3: Factors of 9955

List of positive integer factors of 9955 that divides 9955 without a remainder.

1, 5, 11, 55, 181, 905, 1991

Step-4: Factors of 9970

List of positive integer factors of 9970 that divides 9955 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9955 and 9970. The biggest common factor number is the GCF number.
So the greatest common factor 9955 and 9970 is 5.

Also check out the Least Common Multiple of 9955 and 9970