What is the Greatest Common Factor of 91990 and 91999?

Greatest common factor (GCF) of 91990 and 91999 is 1.

GCF(91990,91999) = 1

We will now calculate the prime factors of 91990 and 91999, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 91990 and 91999.

How to find the GCF of 91990 and 91999?

We will first find the prime factorization of 91990 and 91999. After we will calculate the factors of 91990 and 91999 and find the biggest common factor number .

Step-1: Prime Factorization of 91990

Prime factors of 91990 are 2, 5, 9199. Prime factorization of 91990 in exponential form is:

91990 = 2¹ × 5¹ × 9199¹

Step-2: Prime Factorization of 91999

Prime factors of 91999 are 197, 467. Prime factorization of 91999 in exponential form is:

91999 = 197¹ × 467¹

Step-3: Factors of 91990

List of positive integer factors of 91990 that divides 91990 without a remainder.

1, 2, 5, 10, 9199, 18398, 45995

Step-4: Factors of 91999

List of positive integer factors of 91999 that divides 91990 without a remainder.

1, 197, 467

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 91990 and 91999. The biggest common factor number is the GCF number.
So the greatest common factor 91990 and 91999 is 1.

Also check out the Least Common Multiple of 91990 and 91999