What is the Greatest Common Factor of 15781 and 15787?

Greatest common factor (GCF) of 15781 and 15787 is 1.

GCF(15781,15787) = 1

We will now calculate the prime factors of 15781 and 15787, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15781 and 15787.

How to find the GCF of 15781 and 15787?

We will first find the prime factorization of 15781 and 15787. After we will calculate the factors of 15781 and 15787 and find the biggest common factor number .

Step-1: Prime Factorization of 15781

Prime factors of 15781 are 43, 367. Prime factorization of 15781 in exponential form is:

15781 = 43¹ × 367¹

Step-2: Prime Factorization of 15787

Prime factors of 15787 are 15787. Prime factorization of 15787 in exponential form is:

15787 = 15787¹

Step-3: Factors of 15781

List of positive integer factors of 15781 that divides 15781 without a remainder.

1, 43, 367

Step-4: Factors of 15787

List of positive integer factors of 15787 that divides 15781 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15781 and 15787. The biggest common factor number is the GCF number.
So the greatest common factor 15781 and 15787 is 1.

Also check out the Least Common Multiple of 15781 and 15787