What is the Greatest Common Factor of 18886 and 18891?

Greatest common factor (GCF) of 18886 and 18891 is 1.

GCF(18886,18891) = 1

We will now calculate the prime factors of 18886 and 18891, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18886 and 18891.

How to find the GCF of 18886 and 18891?

We will first find the prime factorization of 18886 and 18891. After we will calculate the factors of 18886 and 18891 and find the biggest common factor number .

Step-1: Prime Factorization of 18886

Prime factors of 18886 are 2, 7, 19, 71. Prime factorization of 18886 in exponential form is:

18886 = 2¹ × 7¹ × 19¹ × 71¹

Step-2: Prime Factorization of 18891

Prime factors of 18891 are 3, 2099. Prime factorization of 18891 in exponential form is:

18891 = 3² × 2099¹

Step-3: Factors of 18886

List of positive integer factors of 18886 that divides 18886 without a remainder.

1, 2, 7, 14, 19, 38, 71, 133, 142, 266, 497, 994, 1349, 2698, 9443

Step-4: Factors of 18891

List of positive integer factors of 18891 that divides 18886 without a remainder.

1, 3, 9, 2099, 6297

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18886 and 18891. The biggest common factor number is the GCF number.
So the greatest common factor 18886 and 18891 is 1.

Also check out the Least Common Multiple of 18886 and 18891