What is the Greatest Common Factor of 15855 and 15859?

Greatest common factor (GCF) of 15855 and 15859 is 1.

GCF(15855,15859) = 1

We will now calculate the prime factors of 15855 and 15859, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15855 and 15859.

How to find the GCF of 15855 and 15859?

We will first find the prime factorization of 15855 and 15859. After we will calculate the factors of 15855 and 15859 and find the biggest common factor number .

Step-1: Prime Factorization of 15855

Prime factors of 15855 are 3, 5, 7, 151. Prime factorization of 15855 in exponential form is:

15855 = 3¹ × 5¹ × 7¹ × 151¹

Step-2: Prime Factorization of 15859

Prime factors of 15859 are 15859. Prime factorization of 15859 in exponential form is:

15859 = 15859¹

Step-3: Factors of 15855

List of positive integer factors of 15855 that divides 15855 without a remainder.

1, 3, 5, 7, 15, 21, 35, 105, 151, 453, 755, 1057, 2265, 3171, 5285

Step-4: Factors of 15859

List of positive integer factors of 15859 that divides 15855 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15855 and 15859. The biggest common factor number is the GCF number.
So the greatest common factor 15855 and 15859 is 1.

Also check out the Least Common Multiple of 15855 and 15859