What is the Greatest Common Factor of 90991 and 91009?

Greatest common factor (GCF) of 90991 and 91009 is 1.

GCF(90991,91009) = 1

We will now calculate the prime factors of 90991 and 91009, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 90991 and 91009.

How to find the GCF of 90991 and 91009?

We will first find the prime factorization of 90991 and 91009. After we will calculate the factors of 90991 and 91009 and find the biggest common factor number .

Step-1: Prime Factorization of 90991

Prime factors of 90991 are 19, 4789. Prime factorization of 90991 in exponential form is:

90991 = 19¹ × 4789¹

Step-2: Prime Factorization of 91009

Prime factors of 91009 are 91009. Prime factorization of 91009 in exponential form is:

91009 = 91009¹

Step-3: Factors of 90991

List of positive integer factors of 90991 that divides 90991 without a remainder.

1, 19, 4789

Step-4: Factors of 91009

List of positive integer factors of 91009 that divides 90991 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 90991 and 91009. The biggest common factor number is the GCF number.
So the greatest common factor 90991 and 91009 is 1.

Also check out the Least Common Multiple of 90991 and 91009