What is the Greatest Common Factor of 21421 and 21426?

Greatest common factor (GCF) of 21421 and 21426 is 1.

GCF(21421,21426) = 1

We will now calculate the prime factors of 21421 and 21426, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21421 and 21426.

How to find the GCF of 21421 and 21426?

We will first find the prime factorization of 21421 and 21426. After we will calculate the factors of 21421 and 21426 and find the biggest common factor number .

Step-1: Prime Factorization of 21421

Prime factors of 21421 are 31, 691. Prime factorization of 21421 in exponential form is:

21421 = 31¹ × 691¹

Step-2: Prime Factorization of 21426

Prime factors of 21426 are 2, 3, 3571. Prime factorization of 21426 in exponential form is:

21426 = 2¹ × 3¹ × 3571¹

Step-3: Factors of 21421

List of positive integer factors of 21421 that divides 21421 without a remainder.

1, 31, 691

Step-4: Factors of 21426

List of positive integer factors of 21426 that divides 21421 without a remainder.

1, 2, 3, 6, 3571, 7142, 10713

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21421 and 21426. The biggest common factor number is the GCF number.
So the greatest common factor 21421 and 21426 is 1.

Also check out the Least Common Multiple of 21421 and 21426