What is the Greatest Common Factor of 5781 and 5787?

Greatest common factor (GCF) of 5781 and 5787 is 3.

GCF(5781,5787) = 3

We will now calculate the prime factors of 5781 and 5787, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 5781 and 5787.

How to find the GCF of 5781 and 5787?

We will first find the prime factorization of 5781 and 5787. After we will calculate the factors of 5781 and 5787 and find the biggest common factor number .

Step-1: Prime Factorization of 5781

Prime factors of 5781 are 3, 41, 47. Prime factorization of 5781 in exponential form is:

5781 = 3¹ × 41¹ × 47¹

Step-2: Prime Factorization of 5787

Prime factors of 5787 are 3, 643. Prime factorization of 5787 in exponential form is:

5787 = 3² × 643¹

Step-3: Factors of 5781

List of positive integer factors of 5781 that divides 5781 without a remainder.

1, 3, 41, 47, 123, 141, 1927

Step-4: Factors of 5787

List of positive integer factors of 5787 that divides 5781 without a remainder.

1, 3, 9, 643, 1929

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 5781 and 5787. The biggest common factor number is the GCF number.
So the greatest common factor 5781 and 5787 is 3.

Also check out the Least Common Multiple of 5781 and 5787