What is the Greatest Common Factor of 9861 and 9865?

Greatest common factor (GCF) of 9861 and 9865 is 1.

GCF(9861,9865) = 1

We will now calculate the prime factors of 9861 and 9865, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 9861 and 9865.

How to find the GCF of 9861 and 9865?

We will first find the prime factorization of 9861 and 9865. After we will calculate the factors of 9861 and 9865 and find the biggest common factor number .

Step-1: Prime Factorization of 9861

Prime factors of 9861 are 3, 19, 173. Prime factorization of 9861 in exponential form is:

9861 = 3¹ × 19¹ × 173¹

Step-2: Prime Factorization of 9865

Prime factors of 9865 are 5, 1973. Prime factorization of 9865 in exponential form is:

9865 = 5¹ × 1973¹

Step-3: Factors of 9861

List of positive integer factors of 9861 that divides 9861 without a remainder.

1, 3, 19, 57, 173, 519, 3287

Step-4: Factors of 9865

List of positive integer factors of 9865 that divides 9861 without a remainder.

1, 5, 1973

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 9861 and 9865. The biggest common factor number is the GCF number.
So the greatest common factor 9861 and 9865 is 1.

Also check out the Least Common Multiple of 9861 and 9865