What is the Greatest Common Factor of 81742 and 81756?

Greatest common factor (GCF) of 81742 and 81756 is 2.

GCF(81742,81756) = 2

We will now calculate the prime factors of 81742 and 81756, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 81742 and 81756.

How to find the GCF of 81742 and 81756?

We will first find the prime factorization of 81742 and 81756. After we will calculate the factors of 81742 and 81756 and find the biggest common factor number .

Step-1: Prime Factorization of 81742

Prime factors of 81742 are 2, 23, 1777. Prime factorization of 81742 in exponential form is:

81742 = 2¹ × 23¹ × 1777¹

Step-2: Prime Factorization of 81756

Prime factors of 81756 are 2, 3, 757. Prime factorization of 81756 in exponential form is:

81756 = 2² × 3³ × 757¹

Step-3: Factors of 81742

List of positive integer factors of 81742 that divides 81742 without a remainder.

1, 2, 23, 46, 1777, 3554, 40871

Step-4: Factors of 81756

List of positive integer factors of 81756 that divides 81742 without a remainder.

1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 757, 1514, 2271, 3028, 4542, 6813, 9084, 13626, 20439, 27252, 40878

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 81742 and 81756. The biggest common factor number is the GCF number.
So the greatest common factor 81742 and 81756 is 2.

Also check out the Least Common Multiple of 81742 and 81756