What is the Greatest Common Factor of 9955 and 9975?

Greatest common factor (GCF) of 9955 and 9975 is 5.

GCF(9955,9975) = 5

We will now calculate the prime factors of 9955 and 9975, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9955 and 9975.

How to find the GCF of 9955 and 9975?

We will first find the prime factorization of 9955 and 9975. After we will calculate the factors of 9955 and 9975 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 9975

Prime factors of 9975 are 3, 5, 7, 19. Prime factorization of 9975 in exponential form is:

9975 = 3¹ × 5² × 7¹ × 19¹

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 9975

List of positive integer factors of 9975 that divides 9955 without a remainder.

1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 3325

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9955 and 9975. The biggest common factor number is the GCF number.
So the greatest common factor 9955 and 9975 is 5.

Also check out the Least Common Multiple of 9955 and 9975