What is the Greatest Common Factor of 15609 and 15615?

Greatest common factor (GCF) of 15609 and 15615 is 3.

GCF(15609,15615) = 3

We will now calculate the prime factors of 15609 and 15615, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15609 and 15615.

How to find the GCF of 15609 and 15615?

We will first find the prime factorization of 15609 and 15615. After we will calculate the factors of 15609 and 15615 and find the biggest common factor number .

Step-1: Prime Factorization of 15609

Prime factors of 15609 are 3, 11, 43. Prime factorization of 15609 in exponential form is:

15609 = 3¹ × 11² × 43¹

Step-2: Prime Factorization of 15615

Prime factors of 15615 are 3, 5, 347. Prime factorization of 15615 in exponential form is:

15615 = 3² × 5¹ × 347¹

Step-3: Factors of 15609

List of positive integer factors of 15609 that divides 15609 without a remainder.

1, 3, 11, 33, 43, 121, 129, 363, 473, 1419, 5203

Step-4: Factors of 15615

List of positive integer factors of 15615 that divides 15609 without a remainder.

1, 3, 5, 9, 15, 45, 347, 1041, 1735, 3123, 5205

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15609 and 15615. The biggest common factor number is the GCF number.
So the greatest common factor 15609 and 15615 is 3.

Also check out the Least Common Multiple of 15609 and 15615