What is the Greatest Common Factor of 1899 and 1905?

Greatest common factor (GCF) of 1899 and 1905 is 3.

GCF(1899,1905) = 3

We will now calculate the prime factors of 1899 and 1905, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1899 and 1905.

How to find the GCF of 1899 and 1905?

We will first find the prime factorization of 1899 and 1905. After we will calculate the factors of 1899 and 1905 and find the biggest common factor number .

Step-1: Prime Factorization of 1899

Prime factors of 1899 are 3, 211. Prime factorization of 1899 in exponential form is:

1899 = 3² × 211¹

Step-2: Prime Factorization of 1905

Prime factors of 1905 are 3, 5, 127. Prime factorization of 1905 in exponential form is:

1905 = 3¹ × 5¹ × 127¹

Step-3: Factors of 1899

List of positive integer factors of 1899 that divides 1899 without a remainder.

1, 3, 9, 211, 633

Step-4: Factors of 1905

List of positive integer factors of 1905 that divides 1899 without a remainder.

1, 3, 5, 15, 127, 381, 635

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1899 and 1905. The biggest common factor number is the GCF number.
So the greatest common factor 1899 and 1905 is 3.

Also check out the Least Common Multiple of 1899 and 1905