What is the Greatest Common Factor of 65821 and 65840?

Greatest common factor (GCF) of 65821 and 65840 is 1.

GCF(65821,65840) = 1

We will now calculate the prime factors of 65821 and 65840, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 65821 and 65840.

How to find the GCF of 65821 and 65840?

We will first find the prime factorization of 65821 and 65840. After we will calculate the factors of 65821 and 65840 and find the biggest common factor number .

Step-1: Prime Factorization of 65821

Prime factors of 65821 are 7, 9403. Prime factorization of 65821 in exponential form is:

65821 = 7¹ × 9403¹

Step-2: Prime Factorization of 65840

Prime factors of 65840 are 2, 5, 823. Prime factorization of 65840 in exponential form is:

65840 = 2⁴ × 5¹ × 823¹

Step-3: Factors of 65821

List of positive integer factors of 65821 that divides 65821 without a remainder.

1, 7, 9403

Step-4: Factors of 65840

List of positive integer factors of 65840 that divides 65821 without a remainder.

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 823, 1646, 3292, 4115, 6584, 8230, 13168, 16460, 32920

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 65821 and 65840. The biggest common factor number is the GCF number.
So the greatest common factor 65821 and 65840 is 1.

Also check out the Least Common Multiple of 65821 and 65840