What is the Greatest Common Factor of 70389 and 70405?

Greatest common factor (GCF) of 70389 and 70405 is 1.

GCF(70389,70405) = 1

We will now calculate the prime factors of 70389 and 70405, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70389 and 70405.

How to find the GCF of 70389 and 70405?

We will first find the prime factorization of 70389 and 70405. After we will calculate the factors of 70389 and 70405 and find the biggest common factor number .

Step-1: Prime Factorization of 70389

Prime factors of 70389 are 3, 11, 79. Prime factorization of 70389 in exponential form is:

70389 = 3⁴ × 11¹ × 79¹

Step-2: Prime Factorization of 70405

Prime factors of 70405 are 5, 14081. Prime factorization of 70405 in exponential form is:

70405 = 5¹ × 14081¹

Step-3: Factors of 70389

List of positive integer factors of 70389 that divides 70389 without a remainder.

1, 3, 9, 11, 27, 33, 79, 81, 99, 237, 297, 711, 869, 891, 2133, 2607, 6399, 7821, 23463

Step-4: Factors of 70405

List of positive integer factors of 70405 that divides 70389 without a remainder.

1, 5, 14081

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70389 and 70405. The biggest common factor number is the GCF number.
So the greatest common factor 70389 and 70405 is 1.

Also check out the Least Common Multiple of 70389 and 70405