What is the Greatest Common Factor of 66640 and 66644?

Greatest common factor (GCF) of 66640 and 66644 is 4.

GCF(66640,66644) = 4

We will now calculate the prime factors of 66640 and 66644, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66640 and 66644.

How to find the GCF of 66640 and 66644?

We will first find the prime factorization of 66640 and 66644. After we will calculate the factors of 66640 and 66644 and find the biggest common factor number .

Step-1: Prime Factorization of 66640

Prime factors of 66640 are 2, 5, 7, 17. Prime factorization of 66640 in exponential form is:

66640 = 2⁴ × 5¹ × 7² × 17¹

Step-2: Prime Factorization of 66644

Prime factors of 66644 are 2, 16661. Prime factorization of 66644 in exponential form is:

66644 = 2² × 16661¹

Step-3: Factors of 66640

List of positive integer factors of 66640 that divides 66640 without a remainder.

1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 340, 392, 476, 490, 560, 595, 680, 784, 833, 952, 980, 1190, 1360, 1666, 1904, 1960, 2380, 3332, 3920, 4165, 4760, 6664, 8330, 9520, 13328, 16660, 33320

Step-4: Factors of 66644

List of positive integer factors of 66644 that divides 66640 without a remainder.

1, 2, 4, 16661, 33322

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66640 and 66644. The biggest common factor number is the GCF number.
So the greatest common factor 66640 and 66644 is 4.

Also check out the Least Common Multiple of 66640 and 66644