What is the Greatest Common Factor of 21623 and 21641?

Greatest common factor (GCF) of 21623 and 21641 is 1.

GCF(21623,21641) = 1

We will now calculate the prime factors of 21623 and 21641, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 21623 and 21641.

How to find the GCF of 21623 and 21641?

We will first find the prime factorization of 21623 and 21641. After we will calculate the factors of 21623 and 21641 and find the biggest common factor number .

Step-1: Prime Factorization of 21623

Prime factors of 21623 are 7, 3089. Prime factorization of 21623 in exponential form is:

21623 = 7¹ × 3089¹

Step-2: Prime Factorization of 21641

Prime factors of 21641 are 17, 19, 67. Prime factorization of 21641 in exponential form is:

21641 = 17¹ × 19¹ × 67¹

Step-3: Factors of 21623

List of positive integer factors of 21623 that divides 21623 without a remainder.

1, 7, 3089

Step-4: Factors of 21641

List of positive integer factors of 21641 that divides 21623 without a remainder.

1, 17, 19, 67, 323, 1139, 1273

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 21623 and 21641. The biggest common factor number is the GCF number.
So the greatest common factor 21623 and 21641 is 1.

Also check out the Least Common Multiple of 21623 and 21641