What is the Greatest Common Factor of 66143 and 66155?

Greatest common factor (GCF) of 66143 and 66155 is 1.

GCF(66143,66155) = 1

We will now calculate the prime factors of 66143 and 66155, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66143 and 66155.

How to find the GCF of 66143 and 66155?

We will first find the prime factorization of 66143 and 66155. After we will calculate the factors of 66143 and 66155 and find the biggest common factor number .

Step-1: Prime Factorization of 66143

Prime factors of 66143 are 7, 11, 859. Prime factorization of 66143 in exponential form is:

66143 = 7¹ × 11¹ × 859¹

Step-2: Prime Factorization of 66155

Prime factors of 66155 are 5, 101, 131. Prime factorization of 66155 in exponential form is:

66155 = 5¹ × 101¹ × 131¹

Step-3: Factors of 66143

List of positive integer factors of 66143 that divides 66143 without a remainder.

1, 7, 11, 77, 859, 6013, 9449

Step-4: Factors of 66155

List of positive integer factors of 66155 that divides 66143 without a remainder.

1, 5, 101, 131, 505, 655, 13231

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66143 and 66155. The biggest common factor number is the GCF number.
So the greatest common factor 66143 and 66155 is 1.

Also check out the Least Common Multiple of 66143 and 66155