What is the Greatest Common Factor of 21402 and 21411?

Greatest common factor (GCF) of 21402 and 21411 is 9.

GCF(21402,21411) = 9

We will now calculate the prime factors of 21402 and 21411, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21402 and 21411.

How to find the GCF of 21402 and 21411?

We will first find the prime factorization of 21402 and 21411. After we will calculate the factors of 21402 and 21411 and find the biggest common factor number .

Step-1: Prime Factorization of 21402

Prime factors of 21402 are 2, 3, 29, 41. Prime factorization of 21402 in exponential form is:

21402 = 2¹ × 3² × 29¹ × 41¹

Step-2: Prime Factorization of 21411

Prime factors of 21411 are 3, 13, 61. Prime factorization of 21411 in exponential form is:

21411 = 3³ × 13¹ × 61¹

Step-3: Factors of 21402

List of positive integer factors of 21402 that divides 21402 without a remainder.

1, 2, 3, 6, 9, 18, 29, 41, 58, 82, 87, 123, 174, 246, 261, 369, 522, 738, 1189, 2378, 3567, 7134, 10701

Step-4: Factors of 21411

List of positive integer factors of 21411 that divides 21402 without a remainder.

1, 3, 9, 13, 27, 39, 61, 117, 183, 351, 549, 793, 1647, 2379, 7137

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21402 and 21411. The biggest common factor number is the GCF number.
So the greatest common factor 21402 and 21411 is 9.

Also check out the Least Common Multiple of 21402 and 21411