What is the Greatest Common Factor of 66905 and 66915?

Greatest common factor (GCF) of 66905 and 66915 is 5.

GCF(66905,66915) = 5

We will now calculate the prime factors of 66905 and 66915, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66905 and 66915.

How to find the GCF of 66905 and 66915?

We will first find the prime factorization of 66905 and 66915. After we will calculate the factors of 66905 and 66915 and find the biggest common factor number .

Step-1: Prime Factorization of 66905

Prime factors of 66905 are 5, 13381. Prime factorization of 66905 in exponential form is:

66905 = 5¹ × 13381¹

Step-2: Prime Factorization of 66915

Prime factors of 66915 are 3, 5, 1487. Prime factorization of 66915 in exponential form is:

66915 = 3² × 5¹ × 1487¹

Step-3: Factors of 66905

List of positive integer factors of 66905 that divides 66905 without a remainder.

1, 5, 13381

Step-4: Factors of 66915

List of positive integer factors of 66915 that divides 66905 without a remainder.

1, 3, 5, 9, 15, 45, 1487, 4461, 7435, 13383, 22305

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66905 and 66915. The biggest common factor number is the GCF number.
So the greatest common factor 66905 and 66915 is 5.

Also check out the Least Common Multiple of 66905 and 66915