What is the Greatest Common Factor of 21247 and 21261?

Greatest common factor (GCF) of 21247 and 21261 is 1.

GCF(21247,21261) = 1

We will now calculate the prime factors of 21247 and 21261, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21247 and 21261.

How to find the GCF of 21247 and 21261?

We will first find the prime factorization of 21247 and 21261. After we will calculate the factors of 21247 and 21261 and find the biggest common factor number .

Step-1: Prime Factorization of 21247

Prime factors of 21247 are 21247. Prime factorization of 21247 in exponential form is:

21247 = 21247¹

Step-2: Prime Factorization of 21261

Prime factors of 21261 are 3, 19, 373. Prime factorization of 21261 in exponential form is:

21261 = 3¹ × 19¹ × 373¹

Step-3: Factors of 21247

List of positive integer factors of 21247 that divides 21247 without a remainder.

Step-4: Factors of 21261

List of positive integer factors of 21261 that divides 21247 without a remainder.

1, 3, 19, 57, 373, 1119, 7087

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21247 and 21261. The biggest common factor number is the GCF number.
So the greatest common factor 21247 and 21261 is 1.

Also check out the Least Common Multiple of 21247 and 21261