What is the Greatest Common Factor of 39903 and 39915?

Greatest common factor (GCF) of 39903 and 39915 is 3.

GCF(39903,39915) = 3

We will now calculate the prime factors of 39903 and 39915, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39903 and 39915.

How to find the GCF of 39903 and 39915?

We will first find the prime factorization of 39903 and 39915. After we will calculate the factors of 39903 and 39915 and find the biggest common factor number .

Step-1: Prime Factorization of 39903

Prime factors of 39903 are 3, 47, 283. Prime factorization of 39903 in exponential form is:

39903 = 3¹ × 47¹ × 283¹

Step-2: Prime Factorization of 39915

Prime factors of 39915 are 3, 5, 887. Prime factorization of 39915 in exponential form is:

39915 = 3² × 5¹ × 887¹

Step-3: Factors of 39903

List of positive integer factors of 39903 that divides 39903 without a remainder.

1, 3, 47, 141, 283, 849, 13301

Step-4: Factors of 39915

List of positive integer factors of 39915 that divides 39903 without a remainder.

1, 3, 5, 9, 15, 45, 887, 2661, 4435, 7983, 13305

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39903 and 39915. The biggest common factor number is the GCF number.
So the greatest common factor 39903 and 39915 is 3.

Also check out the Least Common Multiple of 39903 and 39915