What is the Greatest Common Factor of 74205 and 74220?

Greatest common factor (GCF) of 74205 and 74220 is 15.

GCF(74205,74220) = 15

We will now calculate the prime factors of 74205 and 74220, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 74205 and 74220.

How to find the GCF of 74205 and 74220?

We will first find the prime factorization of 74205 and 74220. After we will calculate the factors of 74205 and 74220 and find the biggest common factor number .

Step-1: Prime Factorization of 74205

Prime factors of 74205 are 3, 5, 17, 97. Prime factorization of 74205 in exponential form is:

74205 = 3² × 5¹ × 17¹ × 97¹

Step-2: Prime Factorization of 74220

Prime factors of 74220 are 2, 3, 5, 1237. Prime factorization of 74220 in exponential form is:

74220 = 2² × 3¹ × 5¹ × 1237¹

Step-3: Factors of 74205

List of positive integer factors of 74205 that divides 74205 without a remainder.

1, 3, 5, 9, 15, 17, 45, 51, 85, 97, 153, 255, 291, 485, 765, 873, 1455, 1649, 4365, 4947, 8245, 14841, 24735

Step-4: Factors of 74220

List of positive integer factors of 74220 that divides 74205 without a remainder.

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1237, 2474, 3711, 4948, 6185, 7422, 12370, 14844, 18555, 24740, 37110

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 74205 and 74220. The biggest common factor number is the GCF number.
So the greatest common factor 74205 and 74220 is 15.

Also check out the Least Common Multiple of 74205 and 74220