What is the Greatest Common Factor of 435 and 447?

Greatest common factor (GCF) of 435 and 447 is 3.

GCF(435,447) = 3

We will now calculate the prime factors of 435 and 447, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 435 and 447.

How to find the GCF of 435 and 447?

We will first find the prime factorization of 435 and 447. After we will calculate the factors of 435 and 447 and find the biggest common factor number .

Step-1: Prime Factorization of 435

Prime factors of 435 are 3, 5, 29. Prime factorization of 435 in exponential form is:

435 = 3¹ × 5¹ × 29¹

Step-2: Prime Factorization of 447

Prime factors of 447 are 3, 149. Prime factorization of 447 in exponential form is:

447 = 3¹ × 149¹

Step-3: Factors of 435

List of positive integer factors of 435 that divides 435 without a remainder.

1, 3, 5, 15, 29, 87, 145

Step-4: Factors of 447

List of positive integer factors of 447 that divides 435 without a remainder.

1, 3, 149

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 435 and 447. The biggest common factor number is the GCF number.
So the greatest common factor 435 and 447 is 3.

Also check out the Least Common Multiple of 435 and 447