What is the Greatest Common Factor of 66647 and 66661?

Greatest common factor (GCF) of 66647 and 66661 is 7.

GCF(66647,66661) = 7

We will now calculate the prime factors of 66647 and 66661, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66647 and 66661.

How to find the GCF of 66647 and 66661?

We will first find the prime factorization of 66647 and 66661. After we will calculate the factors of 66647 and 66661 and find the biggest common factor number .

Step-1: Prime Factorization of 66647

Prime factors of 66647 are 7, 9521. Prime factorization of 66647 in exponential form is:

66647 = 7¹ × 9521¹

Step-2: Prime Factorization of 66661

Prime factors of 66661 are 7, 89, 107. Prime factorization of 66661 in exponential form is:

66661 = 7¹ × 89¹ × 107¹

Step-3: Factors of 66647

List of positive integer factors of 66647 that divides 66647 without a remainder.

1, 7, 9521

Step-4: Factors of 66661

List of positive integer factors of 66661 that divides 66647 without a remainder.

1, 7, 89, 107, 623, 749, 9523

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66647 and 66661. The biggest common factor number is the GCF number.
So the greatest common factor 66647 and 66661 is 7.

Also check out the Least Common Multiple of 66647 and 66661