What is the Greatest Common Factor of 15885 and 15905?

Greatest common factor (GCF) of 15885 and 15905 is 5.

GCF(15885,15905) = 5

We will now calculate the prime factors of 15885 and 15905, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15885 and 15905.

How to find the GCF of 15885 and 15905?

We will first find the prime factorization of 15885 and 15905. After we will calculate the factors of 15885 and 15905 and find the biggest common factor number .

Step-1: Prime Factorization of 15885

Prime factors of 15885 are 3, 5, 353. Prime factorization of 15885 in exponential form is:

15885 = 3² × 5¹ × 353¹

Step-2: Prime Factorization of 15905

Prime factors of 15905 are 5, 3181. Prime factorization of 15905 in exponential form is:

15905 = 5¹ × 3181¹

Step-3: Factors of 15885

List of positive integer factors of 15885 that divides 15885 without a remainder.

1, 3, 5, 9, 15, 45, 353, 1059, 1765, 3177, 5295

Step-4: Factors of 15905

List of positive integer factors of 15905 that divides 15885 without a remainder.

1, 5, 3181

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 15885 and 15905. The biggest common factor number is the GCF number.
So the greatest common factor 15885 and 15905 is 5.

Also check out the Least Common Multiple of 15885 and 15905