What is the Greatest Common Factor of 66005 and 66015?

Greatest common factor (GCF) of 66005 and 66015 is 5.

GCF(66005,66015) = 5

We will now calculate the prime factors of 66005 and 66015, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66005 and 66015.

How to find the GCF of 66005 and 66015?

We will first find the prime factorization of 66005 and 66015. After we will calculate the factors of 66005 and 66015 and find the biggest common factor number .

Step-1: Prime Factorization of 66005

Prime factors of 66005 are 5, 43, 307. Prime factorization of 66005 in exponential form is:

66005 = 5¹ × 43¹ × 307¹

Step-2: Prime Factorization of 66015

Prime factors of 66015 are 3, 5, 163. Prime factorization of 66015 in exponential form is:

66015 = 3⁴ × 5¹ × 163¹

Step-3: Factors of 66005

List of positive integer factors of 66005 that divides 66005 without a remainder.

1, 5, 43, 215, 307, 1535, 13201

Step-4: Factors of 66015

List of positive integer factors of 66015 that divides 66005 without a remainder.

1, 3, 5, 9, 15, 27, 45, 81, 135, 163, 405, 489, 815, 1467, 2445, 4401, 7335, 13203, 22005

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66005 and 66015. The biggest common factor number is the GCF number.
So the greatest common factor 66005 and 66015 is 5.

Also check out the Least Common Multiple of 66005 and 66015