What is the Greatest Common Factor of 15503 and 15520?

Greatest common factor (GCF) of 15503 and 15520 is 1.

GCF(15503,15520) = 1

We will now calculate the prime factors of 15503 and 15520, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15503 and 15520.

How to find the GCF of 15503 and 15520?

We will first find the prime factorization of 15503 and 15520. After we will calculate the factors of 15503 and 15520 and find the biggest common factor number .

Step-1: Prime Factorization of 15503

Prime factors of 15503 are 37, 419. Prime factorization of 15503 in exponential form is:

15503 = 37¹ × 419¹

Step-2: Prime Factorization of 15520

Prime factors of 15520 are 2, 5, 97. Prime factorization of 15520 in exponential form is:

15520 = 2⁵ × 5¹ × 97¹

Step-3: Factors of 15503

List of positive integer factors of 15503 that divides 15503 without a remainder.

1, 37, 419

Step-4: Factors of 15520

List of positive integer factors of 15520 that divides 15503 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1552, 1940, 3104, 3880, 7760

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15503 and 15520. The biggest common factor number is the GCF number.
So the greatest common factor 15503 and 15520 is 1.

Also check out the Least Common Multiple of 15503 and 15520