What is the Greatest Common Factor of 71708 and 71721?

Greatest common factor (GCF) of 71708 and 71721 is 13.

GCF(71708,71721) = 13

We will now calculate the prime factors of 71708 and 71721, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 71708 and 71721.

How to find the GCF of 71708 and 71721?

We will first find the prime factorization of 71708 and 71721. After we will calculate the factors of 71708 and 71721 and find the biggest common factor number .

Step-1: Prime Factorization of 71708

Prime factors of 71708 are 2, 7, 13, 197. Prime factorization of 71708 in exponential form is:

71708 = 2² × 7¹ × 13¹ × 197¹

Step-2: Prime Factorization of 71721

Prime factors of 71721 are 3, 13, 613. Prime factorization of 71721 in exponential form is:

71721 = 3² × 13¹ × 613¹

Step-3: Factors of 71708

List of positive integer factors of 71708 that divides 71708 without a remainder.

1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 197, 364, 394, 788, 1379, 2561, 2758, 5122, 5516, 10244, 17927, 35854

Step-4: Factors of 71721

List of positive integer factors of 71721 that divides 71708 without a remainder.

1, 3, 9, 13, 39, 117, 613, 1839, 5517, 7969, 23907

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 71708 and 71721. The biggest common factor number is the GCF number.
So the greatest common factor 71708 and 71721 is 13.

Also check out the Least Common Multiple of 71708 and 71721