What is the Greatest Common Factor of 19908 and 19921?

Greatest common factor (GCF) of 19908 and 19921 is 1.

GCF(19908,19921) = 1

We will now calculate the prime factors of 19908 and 19921, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 19908 and 19921.

How to find the GCF of 19908 and 19921?

We will first find the prime factorization of 19908 and 19921. After we will calculate the factors of 19908 and 19921 and find the biggest common factor number .

Step-1: Prime Factorization of 19908

Prime factors of 19908 are 2, 3, 7, 79. Prime factorization of 19908 in exponential form is:

19908 = 2² × 3² × 7¹ × 79¹

Step-2: Prime Factorization of 19921

Prime factors of 19921 are 11, 1811. Prime factorization of 19921 in exponential form is:

19921 = 11¹ × 1811¹

Step-3: Factors of 19908

List of positive integer factors of 19908 that divides 19908 without a remainder.

1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 79, 84, 126, 158, 237, 252, 316, 474, 553, 711, 948, 1106, 1422, 1659, 2212, 2844, 3318, 4977, 6636, 9954

Step-4: Factors of 19921

List of positive integer factors of 19921 that divides 19908 without a remainder.

1, 11, 1811

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 19908 and 19921. The biggest common factor number is the GCF number.
So the greatest common factor 19908 and 19921 is 1.

Also check out the Least Common Multiple of 19908 and 19921