What is the Greatest Common Factor of 404 and 418?

Greatest common factor (GCF) of 404 and 418 is 2.

GCF(404,418) = 2

We will now calculate the prime factors of 404 and 418, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 404 and 418.

How to find the GCF of 404 and 418?

We will first find the prime factorization of 404 and 418. After we will calculate the factors of 404 and 418 and find the biggest common factor number .

Step-1: Prime Factorization of 404

Prime factors of 404 are 2, 101. Prime factorization of 404 in exponential form is:

404 = 2² × 101¹

Step-2: Prime Factorization of 418

Prime factors of 418 are 2, 11, 19. Prime factorization of 418 in exponential form is:

418 = 2¹ × 11¹ × 19¹

Step-3: Factors of 404

List of positive integer factors of 404 that divides 404 without a remainder.

1, 2, 4, 101, 202

Step-4: Factors of 418

List of positive integer factors of 418 that divides 404 without a remainder.

1, 2, 11, 19, 22, 38, 209

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 404 and 418. The biggest common factor number is the GCF number.
So the greatest common factor 404 and 418 is 2.

Also check out the Least Common Multiple of 404 and 418