What is the Greatest Common Factor of 620 and 629?

Greatest common factor (GCF) of 620 and 629 is 1.

GCF(620,629) = 1

We will now calculate the prime factors of 620 and 629, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 620 and 629.

How to find the GCF of 620 and 629?

We will first find the prime factorization of 620 and 629. After we will calculate the factors of 620 and 629 and find the biggest common factor number .

Step-1: Prime Factorization of 620

Prime factors of 620 are 2, 5, 31. Prime factorization of 620 in exponential form is:

620 = 2² × 5¹ × 31¹

Step-2: Prime Factorization of 629

Prime factors of 629 are 17, 37. Prime factorization of 629 in exponential form is:

629 = 17¹ × 37¹

Step-3: Factors of 620

List of positive integer factors of 620 that divides 620 without a remainder.

1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310

Step-4: Factors of 629

List of positive integer factors of 629 that divides 620 without a remainder.

1, 17, 37

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 620 and 629. The biggest common factor number is the GCF number.
So the greatest common factor 620 and 629 is 1.

Also check out the Least Common Multiple of 620 and 629