What is the Greatest Common Factor of 15555 and 15572?

Greatest common factor (GCF) of 15555 and 15572 is 17.

GCF(15555,15572) = 17

We will now calculate the prime factors of 15555 and 15572, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15555 and 15572.

How to find the GCF of 15555 and 15572?

We will first find the prime factorization of 15555 and 15572. After we will calculate the factors of 15555 and 15572 and find the biggest common factor number .

Step-1: Prime Factorization of 15555

Prime factors of 15555 are 3, 5, 17, 61. Prime factorization of 15555 in exponential form is:

15555 = 3¹ × 5¹ × 17¹ × 61¹

Step-2: Prime Factorization of 15572

Prime factors of 15572 are 2, 17, 229. Prime factorization of 15572 in exponential form is:

15572 = 2² × 17¹ × 229¹

Step-3: Factors of 15555

List of positive integer factors of 15555 that divides 15555 without a remainder.

1, 3, 5, 15, 17, 51, 61, 85, 183, 255, 305, 915, 1037, 3111, 5185

Step-4: Factors of 15572

List of positive integer factors of 15572 that divides 15555 without a remainder.

1, 2, 4, 17, 34, 68, 229, 458, 916, 3893, 7786

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15555 and 15572. The biggest common factor number is the GCF number.
So the greatest common factor 15555 and 15572 is 17.

Also check out the Least Common Multiple of 15555 and 15572