What is the Greatest Common Factor of 39843 and 39855?

Greatest common factor (GCF) of 39843 and 39855 is 3.

GCF(39843,39855) = 3

We will now calculate the prime factors of 39843 and 39855, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39843 and 39855.

How to find the GCF of 39843 and 39855?

We will first find the prime factorization of 39843 and 39855. After we will calculate the factors of 39843 and 39855 and find the biggest common factor number .

Step-1: Prime Factorization of 39843

Prime factors of 39843 are 3, 19, 233. Prime factorization of 39843 in exponential form is:

39843 = 3² × 19¹ × 233¹

Step-2: Prime Factorization of 39855

Prime factors of 39855 are 3, 5, 2657. Prime factorization of 39855 in exponential form is:

39855 = 3¹ × 5¹ × 2657¹

Step-3: Factors of 39843

List of positive integer factors of 39843 that divides 39843 without a remainder.

1, 3, 9, 19, 57, 171, 233, 699, 2097, 4427, 13281

Step-4: Factors of 39855

List of positive integer factors of 39855 that divides 39843 without a remainder.

1, 3, 5, 15, 2657, 7971, 13285

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39843 and 39855. The biggest common factor number is the GCF number.
So the greatest common factor 39843 and 39855 is 3.

Also check out the Least Common Multiple of 39843 and 39855