What is the Greatest Common Factor of 443 and 455?

Greatest common factor (GCF) of 443 and 455 is 1.

GCF(443,455) = 1

We will now calculate the prime factors of 443 and 455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 443 and 455.

How to find the GCF of 443 and 455?

We will first find the prime factorization of 443 and 455. After we will calculate the factors of 443 and 455 and find the biggest common factor number .

Step-1: Prime Factorization of 443

Prime factors of 443 are 443. Prime factorization of 443 in exponential form is:

443 = 443¹

Step-2: Prime Factorization of 455

Prime factors of 455 are 5, 7, 13. Prime factorization of 455 in exponential form is:

455 = 5¹ × 7¹ × 13¹

Step-3: Factors of 443

List of positive integer factors of 443 that divides 443 without a remainder.

Step-4: Factors of 455

List of positive integer factors of 455 that divides 443 without a remainder.

1, 5, 7, 13, 35, 65, 91

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 443 and 455. The biggest common factor number is the GCF number.
So the greatest common factor 443 and 455 is 1.

Also check out the Least Common Multiple of 443 and 455