What is the Greatest Common Factor of 20729 and 20745?

Greatest common factor (GCF) of 20729 and 20745 is 1.

GCF(20729,20745) = 1

We will now calculate the prime factors of 20729 and 20745, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20729 and 20745.

How to find the GCF of 20729 and 20745?

We will first find the prime factorization of 20729 and 20745. After we will calculate the factors of 20729 and 20745 and find the biggest common factor number .

Step-1: Prime Factorization of 20729

Prime factors of 20729 are 19, 1091. Prime factorization of 20729 in exponential form is:

20729 = 19¹ × 1091¹

Step-2: Prime Factorization of 20745

Prime factors of 20745 are 3, 5, 461. Prime factorization of 20745 in exponential form is:

20745 = 3² × 5¹ × 461¹

Step-3: Factors of 20729

List of positive integer factors of 20729 that divides 20729 without a remainder.

1, 19, 1091

Step-4: Factors of 20745

List of positive integer factors of 20745 that divides 20729 without a remainder.

1, 3, 5, 9, 15, 45, 461, 1383, 2305, 4149, 6915

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 20729 and 20745. The biggest common factor number is the GCF number.
So the greatest common factor 20729 and 20745 is 1.

Also check out the Least Common Multiple of 20729 and 20745