What is the Greatest Common Factor of 39805 and 39815?

Greatest common factor (GCF) of 39805 and 39815 is 5.

GCF(39805,39815) = 5

We will now calculate the prime factors of 39805 and 39815, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39805 and 39815.

How to find the GCF of 39805 and 39815?

We will first find the prime factorization of 39805 and 39815. After we will calculate the factors of 39805 and 39815 and find the biggest common factor number .

Step-1: Prime Factorization of 39805

Prime factors of 39805 are 5, 19, 419. Prime factorization of 39805 in exponential form is:

39805 = 5¹ × 19¹ × 419¹

Step-2: Prime Factorization of 39815

Prime factors of 39815 are 5, 7963. Prime factorization of 39815 in exponential form is:

39815 = 5¹ × 7963¹

Step-3: Factors of 39805

List of positive integer factors of 39805 that divides 39805 without a remainder.

1, 5, 19, 95, 419, 2095, 7961

Step-4: Factors of 39815

List of positive integer factors of 39815 that divides 39805 without a remainder.

1, 5, 7963

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39805 and 39815. The biggest common factor number is the GCF number.
So the greatest common factor 39805 and 39815 is 5.

Also check out the Least Common Multiple of 39805 and 39815