What is the Greatest Common Factor of 21358 and 21366?

Greatest common factor (GCF) of 21358 and 21366 is 2.

GCF(21358,21366) = 2

We will now calculate the prime factors of 21358 and 21366, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21358 and 21366.

How to find the GCF of 21358 and 21366?

We will first find the prime factorization of 21358 and 21366. After we will calculate the factors of 21358 and 21366 and find the biggest common factor number .

Step-1: Prime Factorization of 21358

Prime factors of 21358 are 2, 59, 181. Prime factorization of 21358 in exponential form is:

21358 = 2¹ × 59¹ × 181¹

Step-2: Prime Factorization of 21366

Prime factors of 21366 are 2, 3, 1187. Prime factorization of 21366 in exponential form is:

21366 = 2¹ × 3² × 1187¹

Step-3: Factors of 21358

List of positive integer factors of 21358 that divides 21358 without a remainder.

1, 2, 59, 118, 181, 362, 10679

Step-4: Factors of 21366

List of positive integer factors of 21366 that divides 21358 without a remainder.

1, 2, 3, 6, 9, 18, 1187, 2374, 3561, 7122, 10683

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21358 and 21366. The biggest common factor number is the GCF number.
So the greatest common factor 21358 and 21366 is 2.

Also check out the Least Common Multiple of 21358 and 21366