What is the Greatest Common Factor of 21681 and 21692?

Greatest common factor (GCF) of 21681 and 21692 is 11.

GCF(21681,21692) = 11

We will now calculate the prime factors of 21681 and 21692, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21681 and 21692.

How to find the GCF of 21681 and 21692?

We will first find the prime factorization of 21681 and 21692. After we will calculate the factors of 21681 and 21692 and find the biggest common factor number .

Step-1: Prime Factorization of 21681

Prime factors of 21681 are 3, 11, 73. Prime factorization of 21681 in exponential form is:

21681 = 3³ × 11¹ × 73¹

Step-2: Prime Factorization of 21692

Prime factors of 21692 are 2, 11, 17, 29. Prime factorization of 21692 in exponential form is:

21692 = 2² × 11¹ × 17¹ × 29¹

Step-3: Factors of 21681

List of positive integer factors of 21681 that divides 21681 without a remainder.

1, 3, 9, 11, 27, 33, 73, 99, 219, 297, 657, 803, 1971, 2409, 7227

Step-4: Factors of 21692

List of positive integer factors of 21692 that divides 21681 without a remainder.

1, 2, 4, 11, 17, 22, 29, 34, 44, 58, 68, 116, 187, 319, 374, 493, 638, 748, 986, 1276, 1972, 5423, 10846

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21681 and 21692. The biggest common factor number is the GCF number.
So the greatest common factor 21681 and 21692 is 11.

Also check out the Least Common Multiple of 21681 and 21692