What is the Greatest Common Factor of 3860 and 3865?

Greatest common factor (GCF) of 3860 and 3865 is 5.

GCF(3860,3865) = 5

We will now calculate the prime factors of 3860 and 3865, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 3860 and 3865.

How to find the GCF of 3860 and 3865?

We will first find the prime factorization of 3860 and 3865. After we will calculate the factors of 3860 and 3865 and find the biggest common factor number .

Step-1: Prime Factorization of 3860

Prime factors of 3860 are 2, 5, 193. Prime factorization of 3860 in exponential form is:

3860 = 2² × 5¹ × 193¹

Step-2: Prime Factorization of 3865

Prime factors of 3865 are 5, 773. Prime factorization of 3865 in exponential form is:

3865 = 5¹ × 773¹

Step-3: Factors of 3860

List of positive integer factors of 3860 that divides 3860 without a remainder.

1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930

Step-4: Factors of 3865

List of positive integer factors of 3865 that divides 3860 without a remainder.

1, 5, 773

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 3860 and 3865. The biggest common factor number is the GCF number.
So the greatest common factor 3860 and 3865 is 5.

Also check out the Least Common Multiple of 3860 and 3865