What is the Greatest Common Factor of 63991 and 64009?

Greatest common factor (GCF) of 63991 and 64009 is 1.

GCF(63991,64009) = 1

We will now calculate the prime factors of 63991 and 64009, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 63991 and 64009.

How to find the GCF of 63991 and 64009?

We will first find the prime factorization of 63991 and 64009. After we will calculate the factors of 63991 and 64009 and find the biggest common factor number .

Step-1: Prime Factorization of 63991

Prime factors of 63991 are 89, 719. Prime factorization of 63991 in exponential form is:

63991 = 89¹ × 719¹

Step-2: Prime Factorization of 64009

Prime factors of 64009 are 11, 23. Prime factorization of 64009 in exponential form is:

64009 = 11² × 23²

Step-3: Factors of 63991

List of positive integer factors of 63991 that divides 63991 without a remainder.

1, 89, 719

Step-4: Factors of 64009

List of positive integer factors of 64009 that divides 63991 without a remainder.

1, 11, 23, 121, 253, 529, 2783, 5819

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 63991 and 64009. The biggest common factor number is the GCF number.
So the greatest common factor 63991 and 64009 is 1.

Also check out the Least Common Multiple of 63991 and 64009