What is the Greatest Common Factor of 55140 and 55155?

Greatest common factor (GCF) of 55140 and 55155 is 15.

GCF(55140,55155) = 15

We will now calculate the prime factors of 55140 and 55155, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 55140 and 55155.

How to find the GCF of 55140 and 55155?

We will first find the prime factorization of 55140 and 55155. After we will calculate the factors of 55140 and 55155 and find the biggest common factor number .

Step-1: Prime Factorization of 55140

Prime factors of 55140 are 2, 3, 5, 919. Prime factorization of 55140 in exponential form is:

55140 = 2² × 3¹ × 5¹ × 919¹

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 55140

List of positive integer factors of 55140 that divides 55140 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 919, 1838, 2757, 3676, 4595, 5514, 9190, 11028, 13785, 18380, 27570

Step-4: Factors of 55155

List of positive integer factors of 55155 that divides 55140 without a remainder.

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

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 55140 and 55155. The biggest common factor number is the GCF number.
So the greatest common factor 55140 and 55155 is 15.

Also check out the Least Common Multiple of 55140 and 55155