What is the Greatest Common Factor of 42717 and 42721?

Greatest common factor (GCF) of 42717 and 42721 is 1.

GCF(42717,42721) = 1

We will now calculate the prime factors of 42717 and 42721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42717 and 42721.

How to find the GCF of 42717 and 42721?

We will first find the prime factorization of 42717 and 42721. After we will calculate the factors of 42717 and 42721 and find the biggest common factor number .

Step-1: Prime Factorization of 42717

Prime factors of 42717 are 3, 29, 491. Prime factorization of 42717 in exponential form is:

42717 = 3¹ × 29¹ × 491¹

Step-2: Prime Factorization of 42721

Prime factors of 42721 are 7, 17, 359. Prime factorization of 42721 in exponential form is:

42721 = 7¹ × 17¹ × 359¹

Step-3: Factors of 42717

List of positive integer factors of 42717 that divides 42717 without a remainder.

1, 3, 29, 87, 491, 1473, 14239

Step-4: Factors of 42721

List of positive integer factors of 42721 that divides 42717 without a remainder.

1, 7, 17, 119, 359, 2513, 6103

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 42717 and 42721. The biggest common factor number is the GCF number.
So the greatest common factor 42717 and 42721 is 1.

Also check out the Least Common Multiple of 42717 and 42721