What is the Greatest Common Factor of 68385 and 68391?

Greatest common factor (GCF) of 68385 and 68391 is 3.

GCF(68385,68391) = 3

We will now calculate the prime factors of 68385 and 68391, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 68385 and 68391.

How to find the GCF of 68385 and 68391?

We will first find the prime factorization of 68385 and 68391. After we will calculate the factors of 68385 and 68391 and find the biggest common factor number .

Step-1: Prime Factorization of 68385

Prime factors of 68385 are 3, 5, 47, 97. Prime factorization of 68385 in exponential form is:

68385 = 3¹ × 5¹ × 47¹ × 97¹

Step-2: Prime Factorization of 68391

Prime factors of 68391 are 3, 17, 149. Prime factorization of 68391 in exponential form is:

68391 = 3³ × 17¹ × 149¹

Step-3: Factors of 68385

List of positive integer factors of 68385 that divides 68385 without a remainder.

1, 3, 5, 15, 47, 97, 141, 235, 291, 485, 705, 1455, 4559, 13677, 22795

Step-4: Factors of 68391

List of positive integer factors of 68391 that divides 68385 without a remainder.

1, 3, 9, 17, 27, 51, 149, 153, 447, 459, 1341, 2533, 4023, 7599, 22797

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 68385 and 68391. The biggest common factor number is the GCF number.
So the greatest common factor 68385 and 68391 is 3.

Also check out the Least Common Multiple of 68385 and 68391