What is the Greatest Common Factor of 13485 and 13505?

Greatest common factor (GCF) of 13485 and 13505 is 5.

GCF(13485,13505) = 5

We will now calculate the prime factors of 13485 and 13505, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 13485 and 13505.

How to find the GCF of 13485 and 13505?

We will first find the prime factorization of 13485 and 13505. After we will calculate the factors of 13485 and 13505 and find the biggest common factor number .

Step-1: Prime Factorization of 13485

Prime factors of 13485 are 3, 5, 29, 31. Prime factorization of 13485 in exponential form is:

13485 = 3¹ × 5¹ × 29¹ × 31¹

Step-2: Prime Factorization of 13505

Prime factors of 13505 are 5, 37, 73. Prime factorization of 13505 in exponential form is:

13505 = 5¹ × 37¹ × 73¹

Step-3: Factors of 13485

List of positive integer factors of 13485 that divides 13485 without a remainder.

1, 3, 5, 15, 29, 31, 87, 93, 145, 155, 435, 465, 899, 2697, 4495

Step-4: Factors of 13505

List of positive integer factors of 13505 that divides 13485 without a remainder.

1, 5, 37, 73, 185, 365, 2701

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 13485 and 13505. The biggest common factor number is the GCF number.
So the greatest common factor 13485 and 13505 is 5.

Also check out the Least Common Multiple of 13485 and 13505