What is the Greatest Common Factor of 71391 and 71409?

Greatest common factor (GCF) of 71391 and 71409 is 3.

GCF(71391,71409) = 3

We will now calculate the prime factors of 71391 and 71409, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71391 and 71409.

How to find the GCF of 71391 and 71409?

We will first find the prime factorization of 71391 and 71409. After we will calculate the factors of 71391 and 71409 and find the biggest common factor number .

Step-1: Prime Factorization of 71391

Prime factors of 71391 are 3, 53, 449. Prime factorization of 71391 in exponential form is:

71391 = 3¹ × 53¹ × 449¹

Step-2: Prime Factorization of 71409

Prime factors of 71409 are 3, 13, 1831. Prime factorization of 71409 in exponential form is:

71409 = 3¹ × 13¹ × 1831¹

Step-3: Factors of 71391

List of positive integer factors of 71391 that divides 71391 without a remainder.

1, 3, 53, 159, 449, 1347, 23797

Step-4: Factors of 71409

List of positive integer factors of 71409 that divides 71391 without a remainder.

1, 3, 13, 39, 1831, 5493, 23803

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71391 and 71409. The biggest common factor number is the GCF number.
So the greatest common factor 71391 and 71409 is 3.

Also check out the Least Common Multiple of 71391 and 71409