What is the Greatest Common Factor of 55143 and 55155?

Greatest common factor (GCF) of 55143 and 55155 is 3.

GCF(55143,55155) = 3

We will now calculate the prime factors of 55143 and 55155, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 55143 and 55155.

How to find the GCF of 55143 and 55155?

We will first find the prime factorization of 55143 and 55155. After we will calculate the factors of 55143 and 55155 and find the biggest common factor number .

Step-1: Prime Factorization of 55143

Prime factors of 55143 are 3, 11, 557. Prime factorization of 55143 in exponential form is:

55143 = 3² × 11¹ × 557¹

Step-2: Prime Factorization of 55155

Prime factors of 55155 are 3, 5, 3677. Prime factorization of 55155 in exponential form is:

55155 = 3¹ × 5¹ × 3677¹

Step-3: Factors of 55143

List of positive integer factors of 55143 that divides 55143 without a remainder.

1, 3, 9, 11, 33, 99, 557, 1671, 5013, 6127, 18381

Step-4: Factors of 55155

List of positive integer factors of 55155 that divides 55143 without a remainder.

1, 3, 5, 15, 3677, 11031, 18385

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 55143 and 55155. The biggest common factor number is the GCF number.
So the greatest common factor 55143 and 55155 is 3.

Also check out the Least Common Multiple of 55143 and 55155