What is the Greatest Common Factor of 61720 and 61729?

Greatest common factor (GCF) of 61720 and 61729 is 1.

GCF(61720,61729) = 1

We will now calculate the prime factors of 61720 and 61729, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 61720 and 61729.

How to find the GCF of 61720 and 61729?

We will first find the prime factorization of 61720 and 61729. After we will calculate the factors of 61720 and 61729 and find the biggest common factor number .

Step-1: Prime Factorization of 61720

Prime factors of 61720 are 2, 5, 1543. Prime factorization of 61720 in exponential form is:

61720 = 2³ × 5¹ × 1543¹

Step-2: Prime Factorization of 61729

Prime factors of 61729 are 61729. Prime factorization of 61729 in exponential form is:

61729 = 61729¹

Step-3: Factors of 61720

List of positive integer factors of 61720 that divides 61720 without a remainder.

1, 2, 4, 5, 8, 10, 20, 40, 1543, 3086, 6172, 7715, 12344, 15430, 30860

Step-4: Factors of 61729

List of positive integer factors of 61729 that divides 61720 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 61720 and 61729. The biggest common factor number is the GCF number.
So the greatest common factor 61720 and 61729 is 1.

Also check out the Least Common Multiple of 61720 and 61729