What is the Greatest Common Factor of 17821 and 17840?

Greatest common factor (GCF) of 17821 and 17840 is 1.

GCF(17821,17840) = 1

We will now calculate the prime factors of 17821 and 17840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 17821 and 17840.

How to find the GCF of 17821 and 17840?

We will first find the prime factorization of 17821 and 17840. After we will calculate the factors of 17821 and 17840 and find the biggest common factor number .

Step-1: Prime Factorization of 17821

Prime factors of 17821 are 71, 251. Prime factorization of 17821 in exponential form is:

17821 = 71¹ × 251¹

Step-2: Prime Factorization of 17840

Prime factors of 17840 are 2, 5, 223. Prime factorization of 17840 in exponential form is:

17840 = 2⁴ × 5¹ × 223¹

Step-3: Factors of 17821

List of positive integer factors of 17821 that divides 17821 without a remainder.

1, 71, 251

Step-4: Factors of 17840

List of positive integer factors of 17840 that divides 17821 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 8920

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 17821 and 17840. The biggest common factor number is the GCF number.
So the greatest common factor 17821 and 17840 is 1.

Also check out the Least Common Multiple of 17821 and 17840