What is the Greatest Common Factor of 21203 and 21208?

Greatest common factor (GCF) of 21203 and 21208 is 1.

GCF(21203,21208) = 1

We will now calculate the prime factors of 21203 and 21208, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21203 and 21208.

How to find the GCF of 21203 and 21208?

We will first find the prime factorization of 21203 and 21208. After we will calculate the factors of 21203 and 21208 and find the biggest common factor number .

Step-1: Prime Factorization of 21203

Prime factors of 21203 are 7, 13, 233. Prime factorization of 21203 in exponential form is:

21203 = 7¹ × 13¹ × 233¹

Step-2: Prime Factorization of 21208

Prime factors of 21208 are 2, 11, 241. Prime factorization of 21208 in exponential form is:

21208 = 2³ × 11¹ × 241¹

Step-3: Factors of 21203

List of positive integer factors of 21203 that divides 21203 without a remainder.

1, 7, 13, 91, 233, 1631, 3029

Step-4: Factors of 21208

List of positive integer factors of 21208 that divides 21203 without a remainder.

1, 2, 4, 8, 11, 22, 44, 88, 241, 482, 964, 1928, 2651, 5302, 10604

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21203 and 21208. The biggest common factor number is the GCF number.
So the greatest common factor 21203 and 21208 is 1.

Also check out the Least Common Multiple of 21203 and 21208