What is the Greatest Common Factor of 67991 and 68009?

Greatest common factor (GCF) of 67991 and 68009 is 1.

GCF(67991,68009) = 1

We will now calculate the prime factors of 67991 and 68009, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 67991 and 68009.

How to find the GCF of 67991 and 68009?

We will first find the prime factorization of 67991 and 68009. After we will calculate the factors of 67991 and 68009 and find the biggest common factor number .

Step-1: Prime Factorization of 67991

Prime factors of 67991 are 7, 11, 883. Prime factorization of 67991 in exponential form is:

67991 = 7¹ × 11¹ × 883¹

Step-2: Prime Factorization of 68009

Prime factors of 68009 are 47, 1447. Prime factorization of 68009 in exponential form is:

68009 = 47¹ × 1447¹

Step-3: Factors of 67991

List of positive integer factors of 67991 that divides 67991 without a remainder.

1, 7, 11, 77, 883, 6181, 9713

Step-4: Factors of 68009

List of positive integer factors of 68009 that divides 67991 without a remainder.

1, 47, 1447

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 67991 and 68009. The biggest common factor number is the GCF number.
So the greatest common factor 67991 and 68009 is 1.

Also check out the Least Common Multiple of 67991 and 68009