What is the Greatest Common Factor of 39857 and 39870?

Greatest common factor (GCF) of 39857 and 39870 is 1.

GCF(39857,39870) = 1

We will now calculate the prime factors of 39857 and 39870, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39857 and 39870.

How to find the GCF of 39857 and 39870?

We will first find the prime factorization of 39857 and 39870. After we will calculate the factors of 39857 and 39870 and find the biggest common factor number .

Step-1: Prime Factorization of 39857

Prime factors of 39857 are 39857. Prime factorization of 39857 in exponential form is:

39857 = 39857¹

Step-2: Prime Factorization of 39870

Prime factors of 39870 are 2, 3, 5, 443. Prime factorization of 39870 in exponential form is:

39870 = 2¹ × 3² × 5¹ × 443¹

Step-3: Factors of 39857

List of positive integer factors of 39857 that divides 39857 without a remainder.

Step-4: Factors of 39870

List of positive integer factors of 39870 that divides 39857 without a remainder.

1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 443, 886, 1329, 2215, 2658, 3987, 4430, 6645, 7974, 13290, 19935

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39857 and 39870. The biggest common factor number is the GCF number.
So the greatest common factor 39857 and 39870 is 1.

Also check out the Least Common Multiple of 39857 and 39870