What is the Greatest Common Factor of 18815 and 18821?

Greatest common factor (GCF) of 18815 and 18821 is 1.

GCF(18815,18821) = 1

We will now calculate the prime factors of 18815 and 18821, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 18815 and 18821.

How to find the GCF of 18815 and 18821?

We will first find the prime factorization of 18815 and 18821. After we will calculate the factors of 18815 and 18821 and find the biggest common factor number .

Step-1: Prime Factorization of 18815

Prime factors of 18815 are 5, 53, 71. Prime factorization of 18815 in exponential form is:

18815 = 5¹ × 53¹ × 71¹

Step-2: Prime Factorization of 18821

Prime factors of 18821 are 11, 29, 59. Prime factorization of 18821 in exponential form is:

18821 = 11¹ × 29¹ × 59¹

Step-3: Factors of 18815

List of positive integer factors of 18815 that divides 18815 without a remainder.

1, 5, 53, 71, 265, 355, 3763

Step-4: Factors of 18821

List of positive integer factors of 18821 that divides 18815 without a remainder.

1, 11, 29, 59, 319, 649, 1711

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 18815 and 18821. The biggest common factor number is the GCF number.
So the greatest common factor 18815 and 18821 is 1.

Also check out the Least Common Multiple of 18815 and 18821