What is the Greatest Common Factor of 18666 and 18686?

Greatest common factor (GCF) of 18666 and 18686 is 2.

GCF(18666,18686) = 2

We will now calculate the prime factors of 18666 and 18686, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18666 and 18686.

How to find the GCF of 18666 and 18686?

We will first find the prime factorization of 18666 and 18686. After we will calculate the factors of 18666 and 18686 and find the biggest common factor number .

Step-1: Prime Factorization of 18666

Prime factors of 18666 are 2, 3, 17, 61. Prime factorization of 18666 in exponential form is:

18666 = 2¹ × 3² × 17¹ × 61¹

Step-2: Prime Factorization of 18686

Prime factors of 18686 are 2, 9343. Prime factorization of 18686 in exponential form is:

18686 = 2¹ × 9343¹

Step-3: Factors of 18666

List of positive integer factors of 18666 that divides 18666 without a remainder.

1, 2, 3, 6, 9, 17, 18, 34, 51, 61, 102, 122, 153, 183, 306, 366, 549, 1037, 1098, 2074, 3111, 6222, 9333

Step-4: Factors of 18686

List of positive integer factors of 18686 that divides 18666 without a remainder.

1, 2, 9343

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18666 and 18686. The biggest common factor number is the GCF number.
So the greatest common factor 18666 and 18686 is 2.

Also check out the Least Common Multiple of 18666 and 18686