What is the Greatest Common Factor of 798 and 818?

Greatest common factor (GCF) of 798 and 818 is 2.

GCF(798,818) = 2

We will now calculate the prime factors of 798 and 818, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 798 and 818.

How to find the GCF of 798 and 818?

We will first find the prime factorization of 798 and 818. After we will calculate the factors of 798 and 818 and find the biggest common factor number .

Step-1: Prime Factorization of 798

Prime factors of 798 are 2, 3, 7, 19. Prime factorization of 798 in exponential form is:

798 = 2¹ × 3¹ × 7¹ × 19¹

Step-2: Prime Factorization of 818

Prime factors of 818 are 2, 409. Prime factorization of 818 in exponential form is:

818 = 2¹ × 409¹

Step-3: Factors of 798

List of positive integer factors of 798 that divides 798 without a remainder.

1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399

Step-4: Factors of 818

List of positive integer factors of 818 that divides 798 without a remainder.

1, 2, 409

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 798 and 818. The biggest common factor number is the GCF number.
So the greatest common factor 798 and 818 is 2.

Also check out the Least Common Multiple of 798 and 818