What is the Greatest Common Factor of 71991 and 72010?

Greatest common factor (GCF) of 71991 and 72010 is 19.

GCF(71991,72010) = 19

We will now calculate the prime factors of 71991 and 72010, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71991 and 72010.

How to find the GCF of 71991 and 72010?

We will first find the prime factorization of 71991 and 72010. After we will calculate the factors of 71991 and 72010 and find the biggest common factor number .

Step-1: Prime Factorization of 71991

Prime factors of 71991 are 3, 19, 421. Prime factorization of 71991 in exponential form is:

71991 = 3² × 19¹ × 421¹

Step-2: Prime Factorization of 72010

Prime factors of 72010 are 2, 5, 19, 379. Prime factorization of 72010 in exponential form is:

72010 = 2¹ × 5¹ × 19¹ × 379¹

Step-3: Factors of 71991

List of positive integer factors of 71991 that divides 71991 without a remainder.

1, 3, 9, 19, 57, 171, 421, 1263, 3789, 7999, 23997

Step-4: Factors of 72010

List of positive integer factors of 72010 that divides 71991 without a remainder.

1, 2, 5, 10, 19, 38, 95, 190, 379, 758, 1895, 3790, 7201, 14402, 36005

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71991 and 72010. The biggest common factor number is the GCF number.
So the greatest common factor 71991 and 72010 is 19.

Also check out the Least Common Multiple of 71991 and 72010