What is the Greatest Common Factor of 820 and 839?

Greatest common factor (GCF) of 820 and 839 is 1.

GCF(820,839) = 1

We will now calculate the prime factors of 820 and 839, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 820 and 839.

How to find the GCF of 820 and 839?

We will first find the prime factorization of 820 and 839. After we will calculate the factors of 820 and 839 and find the biggest common factor number .

Step-1: Prime Factorization of 820

Prime factors of 820 are 2, 5, 41. Prime factorization of 820 in exponential form is:

820 = 2² × 5¹ × 41¹

Step-2: Prime Factorization of 839

Prime factors of 839 are 839. Prime factorization of 839 in exponential form is:

839 = 839¹

Step-3: Factors of 820

List of positive integer factors of 820 that divides 820 without a remainder.

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410

Step-4: Factors of 839

List of positive integer factors of 839 that divides 820 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 820 and 839. The biggest common factor number is the GCF number.
So the greatest common factor 820 and 839 is 1.

Also check out the Least Common Multiple of 820 and 839