What is the Greatest Common Factor of 13545 and 13557?

Greatest common factor (GCF) of 13545 and 13557 is 3.

GCF(13545,13557) = 3

We will now calculate the prime factors of 13545 and 13557, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 13545 and 13557.

How to find the GCF of 13545 and 13557?

We will first find the prime factorization of 13545 and 13557. After we will calculate the factors of 13545 and 13557 and find the biggest common factor number .

Step-1: Prime Factorization of 13545

Prime factors of 13545 are 3, 5, 7, 43. Prime factorization of 13545 in exponential form is:

13545 = 3² × 5¹ × 7¹ × 43¹

Step-2: Prime Factorization of 13557

Prime factors of 13557 are 3, 4519. Prime factorization of 13557 in exponential form is:

13557 = 3¹ × 4519¹

Step-3: Factors of 13545

List of positive integer factors of 13545 that divides 13545 without a remainder.

1, 3, 5, 7, 9, 15, 21, 35, 43, 45, 63, 105, 129, 215, 301, 315, 387, 645, 903, 1505, 1935, 2709, 4515

Step-4: Factors of 13557

List of positive integer factors of 13557 that divides 13545 without a remainder.

1, 3, 4519

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 13545 and 13557. The biggest common factor number is the GCF number.
So the greatest common factor 13545 and 13557 is 3.

Also check out the Least Common Multiple of 13545 and 13557