What is the Greatest Common Factor of 66421 and 66438?

Greatest common factor (GCF) of 66421 and 66438 is 1.

GCF(66421,66438) = 1

We will now calculate the prime factors of 66421 and 66438, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66421 and 66438.

How to find the GCF of 66421 and 66438?

We will first find the prime factorization of 66421 and 66438. After we will calculate the factors of 66421 and 66438 and find the biggest common factor number .

Step-1: Prime Factorization of 66421

Prime factors of 66421 are 127, 523. Prime factorization of 66421 in exponential form is:

66421 = 127¹ × 523¹

Step-2: Prime Factorization of 66438

Prime factors of 66438 are 2, 3, 3691. Prime factorization of 66438 in exponential form is:

66438 = 2¹ × 3² × 3691¹

Step-3: Factors of 66421

List of positive integer factors of 66421 that divides 66421 without a remainder.

1, 127, 523

Step-4: Factors of 66438

List of positive integer factors of 66438 that divides 66421 without a remainder.

1, 2, 3, 6, 9, 18, 3691, 7382, 11073, 22146, 33219

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66421 and 66438. The biggest common factor number is the GCF number.
So the greatest common factor 66421 and 66438 is 1.

Also check out the Least Common Multiple of 66421 and 66438