What is the Greatest Common Factor of 39765 and 39771?

Greatest common factor (GCF) of 39765 and 39771 is 3.

GCF(39765,39771) = 3

We will now calculate the prime factors of 39765 and 39771, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39765 and 39771.

How to find the GCF of 39765 and 39771?

We will first find the prime factorization of 39765 and 39771. After we will calculate the factors of 39765 and 39771 and find the biggest common factor number .

Step-1: Prime Factorization of 39765

Prime factors of 39765 are 3, 5, 11, 241. Prime factorization of 39765 in exponential form is:

39765 = 3¹ × 5¹ × 11¹ × 241¹

Step-2: Prime Factorization of 39771

Prime factors of 39771 are 3, 491. Prime factorization of 39771 in exponential form is:

39771 = 3⁴ × 491¹

Step-3: Factors of 39765

List of positive integer factors of 39765 that divides 39765 without a remainder.

1, 3, 5, 11, 15, 33, 55, 165, 241, 723, 1205, 2651, 3615, 7953, 13255

Step-4: Factors of 39771

List of positive integer factors of 39771 that divides 39765 without a remainder.

1, 3, 9, 27, 81, 491, 1473, 4419, 13257

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39765 and 39771. The biggest common factor number is the GCF number.
So the greatest common factor 39765 and 39771 is 3.

Also check out the Least Common Multiple of 39765 and 39771