What is the Greatest Common Factor of 85389 and 85407?

Greatest common factor (GCF) of 85389 and 85407 is 3.

GCF(85389,85407) = 3

We will now calculate the prime factors of 85389 and 85407, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85389 and 85407.

How to find the GCF of 85389 and 85407?

We will first find the prime factorization of 85389 and 85407. After we will calculate the factors of 85389 and 85407 and find the biggest common factor number .

Step-1: Prime Factorization of 85389

Prime factors of 85389 are 3, 28463. Prime factorization of 85389 in exponential form is:

85389 = 3¹ × 28463¹

Step-2: Prime Factorization of 85407

Prime factors of 85407 are 3, 7, 83. Prime factorization of 85407 in exponential form is:

85407 = 3¹ × 7³ × 83¹

Step-3: Factors of 85389

List of positive integer factors of 85389 that divides 85389 without a remainder.

1, 3, 28463

Step-4: Factors of 85407

List of positive integer factors of 85407 that divides 85389 without a remainder.

1, 3, 7, 21, 49, 83, 147, 249, 343, 581, 1029, 1743, 4067, 12201, 28469

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85389 and 85407. The biggest common factor number is the GCF number.
So the greatest common factor 85389 and 85407 is 3.

Also check out the Least Common Multiple of 85389 and 85407