What is the Greatest Common Factor of 18855 and 18860?

Greatest common factor (GCF) of 18855 and 18860 is 5.

GCF(18855,18860) = 5

We will now calculate the prime factors of 18855 and 18860, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18855 and 18860.

How to find the GCF of 18855 and 18860?

We will first find the prime factorization of 18855 and 18860. After we will calculate the factors of 18855 and 18860 and find the biggest common factor number .

Step-1: Prime Factorization of 18855

Prime factors of 18855 are 3, 5, 419. Prime factorization of 18855 in exponential form is:

18855 = 3² × 5¹ × 419¹

Step-2: Prime Factorization of 18860

Prime factors of 18860 are 2, 5, 23, 41. Prime factorization of 18860 in exponential form is:

18860 = 2² × 5¹ × 23¹ × 41¹

Step-3: Factors of 18855

List of positive integer factors of 18855 that divides 18855 without a remainder.

1, 3, 5, 9, 15, 45, 419, 1257, 2095, 3771, 6285

Step-4: Factors of 18860

List of positive integer factors of 18860 that divides 18855 without a remainder.

1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 92, 115, 164, 205, 230, 410, 460, 820, 943, 1886, 3772, 4715, 9430

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18855 and 18860. The biggest common factor number is the GCF number.
So the greatest common factor 18855 and 18860 is 5.

Also check out the Least Common Multiple of 18855 and 18860