What is the Greatest Common Factor of 85485 and 85491?

Greatest common factor (GCF) of 85485 and 85491 is 3.

GCF(85485,85491) = 3

We will now calculate the prime factors of 85485 and 85491, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 85485 and 85491.

How to find the GCF of 85485 and 85491?

We will first find the prime factorization of 85485 and 85491. After we will calculate the factors of 85485 and 85491 and find the biggest common factor number .

Step-1: Prime Factorization of 85485

Prime factors of 85485 are 3, 5, 41, 139. Prime factorization of 85485 in exponential form is:

85485 = 3¹ × 5¹ × 41¹ × 139¹

Step-2: Prime Factorization of 85491

Prime factors of 85491 are 3, 7, 23, 59. Prime factorization of 85491 in exponential form is:

85491 = 3² × 7¹ × 23¹ × 59¹

Step-3: Factors of 85485

List of positive integer factors of 85485 that divides 85485 without a remainder.

1, 3, 5, 15, 41, 123, 139, 205, 417, 615, 695, 2085, 5699, 17097, 28495

Step-4: Factors of 85491

List of positive integer factors of 85491 that divides 85485 without a remainder.

1, 3, 7, 9, 21, 23, 59, 63, 69, 161, 177, 207, 413, 483, 531, 1239, 1357, 1449, 3717, 4071, 9499, 12213, 28497

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 85485 and 85491. The biggest common factor number is the GCF number.
So the greatest common factor 85485 and 85491 is 3.

Also check out the Least Common Multiple of 85485 and 85491