What is the Greatest Common Factor of 55290 and 55309?

Greatest common factor (GCF) of 55290 and 55309 is 19.

GCF(55290,55309) = 19

We will now calculate the prime factors of 55290 and 55309, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 55290 and 55309.

How to find the GCF of 55290 and 55309?

We will first find the prime factorization of 55290 and 55309. After we will calculate the factors of 55290 and 55309 and find the biggest common factor number .

Step-1: Prime Factorization of 55290

Prime factors of 55290 are 2, 3, 5, 19, 97. Prime factorization of 55290 in exponential form is:

55290 = 2¹ × 3¹ × 5¹ × 19¹ × 97¹

Step-2: Prime Factorization of 55309

Prime factors of 55309 are 19, 41, 71. Prime factorization of 55309 in exponential form is:

55309 = 19¹ × 41¹ × 71¹

Step-3: Factors of 55290

List of positive integer factors of 55290 that divides 55290 without a remainder.

1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 97, 114, 190, 194, 285, 291, 485, 570, 582, 970, 1455, 1843, 2910, 3686, 5529, 9215, 11058, 18430, 27645

Step-4: Factors of 55309

List of positive integer factors of 55309 that divides 55290 without a remainder.

1, 19, 41, 71, 779, 1349, 2911

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 55290 and 55309. The biggest common factor number is the GCF number.
So the greatest common factor 55290 and 55309 is 19.

Also check out the Least Common Multiple of 55290 and 55309