What is the Greatest Common Factor of 85443 and 85455?

Greatest common factor (GCF) of 85443 and 85455 is 3.

GCF(85443,85455) = 3

We will now calculate the prime factors of 85443 and 85455, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85443 and 85455.

How to find the GCF of 85443 and 85455?

We will first find the prime factorization of 85443 and 85455. After we will calculate the factors of 85443 and 85455 and find the biggest common factor number .

Step-1: Prime Factorization of 85443

Prime factors of 85443 are 3, 19, 1499. Prime factorization of 85443 in exponential form is:

85443 = 3¹ × 19¹ × 1499¹

Step-2: Prime Factorization of 85455

Prime factors of 85455 are 3, 5, 211. Prime factorization of 85455 in exponential form is:

85455 = 3⁴ × 5¹ × 211¹

Step-3: Factors of 85443

List of positive integer factors of 85443 that divides 85443 without a remainder.

1, 3, 19, 57, 1499, 4497, 28481

Step-4: Factors of 85455

List of positive integer factors of 85455 that divides 85443 without a remainder.

1, 3, 5, 9, 15, 27, 45, 81, 135, 211, 405, 633, 1055, 1899, 3165, 5697, 9495, 17091, 28485

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85443 and 85455. The biggest common factor number is the GCF number.
So the greatest common factor 85443 and 85455 is 3.

Also check out the Least Common Multiple of 85443 and 85455