What is the Greatest Common Factor of 70405 and 70421?

Greatest common factor (GCF) of 70405 and 70421 is 1.

GCF(70405,70421) = 1

We will now calculate the prime factors of 70405 and 70421, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70405 and 70421.

How to find the GCF of 70405 and 70421?

We will first find the prime factorization of 70405 and 70421. After we will calculate the factors of 70405 and 70421 and find the biggest common factor number .

Step-1: Prime Factorization of 70405

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

70405 = 5¹ × 14081¹

Step-2: Prime Factorization of 70421

Prime factors of 70421 are 13, 5417. Prime factorization of 70421 in exponential form is:

70421 = 13¹ × 5417¹

Step-3: Factors of 70405

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

1, 5, 14081

Step-4: Factors of 70421

List of positive integer factors of 70421 that divides 70405 without a remainder.

1, 13, 5417

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70405 and 70421. The biggest common factor number is the GCF number.
So the greatest common factor 70405 and 70421 is 1.

Also check out the Least Common Multiple of 70405 and 70421