What is the Greatest Common Factor of 39897 and 39905?

Greatest common factor (GCF) of 39897 and 39905 is 1.

GCF(39897,39905) = 1

We will now calculate the prime factors of 39897 and 39905, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 39897 and 39905.

How to find the GCF of 39897 and 39905?

We will first find the prime factorization of 39897 and 39905. After we will calculate the factors of 39897 and 39905 and find the biggest common factor number .

Step-1: Prime Factorization of 39897

Prime factors of 39897 are 3, 11, 13, 31. Prime factorization of 39897 in exponential form is:

39897 = 3² × 11¹ × 13¹ × 31¹

Step-2: Prime Factorization of 39905

Prime factors of 39905 are 5, 23, 347. Prime factorization of 39905 in exponential form is:

39905 = 5¹ × 23¹ × 347¹

Step-3: Factors of 39897

List of positive integer factors of 39897 that divides 39897 without a remainder.

1, 3, 9, 11, 13, 31, 33, 39, 93, 99, 117, 143, 279, 341, 403, 429, 1023, 1209, 1287, 3069, 3627, 4433, 13299

Step-4: Factors of 39905

List of positive integer factors of 39905 that divides 39897 without a remainder.

1, 5, 23, 115, 347, 1735, 7981

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 39897 and 39905. The biggest common factor number is the GCF number.
So the greatest common factor 39897 and 39905 is 1.

Also check out the Least Common Multiple of 39897 and 39905