What is the Greatest Common Factor of 66720 and 66730?

Greatest common factor (GCF) of 66720 and 66730 is 10.

GCF(66720,66730) = 10

We will now calculate the prime factors of 66720 and 66730, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 66720 and 66730.

How to find the GCF of 66720 and 66730?

We will first find the prime factorization of 66720 and 66730. After we will calculate the factors of 66720 and 66730 and find the biggest common factor number .

Step-1: Prime Factorization of 66720

Prime factors of 66720 are 2, 3, 5, 139. Prime factorization of 66720 in exponential form is:

66720 = 2⁵ × 3¹ × 5¹ × 139¹

Step-2: Prime Factorization of 66730

Prime factors of 66730 are 2, 5, 6673. Prime factorization of 66730 in exponential form is:

66730 = 2¹ × 5¹ × 6673¹

Step-3: Factors of 66720

List of positive integer factors of 66720 that divides 66720 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 139, 160, 240, 278, 417, 480, 556, 695, 834, 1112, 1390, 1668, 2085, 2224, 2780, 3336, 4170, 4448, 5560, 6672, 8340, 11120, 13344, 16680, 22240, 33360

Step-4: Factors of 66730

List of positive integer factors of 66730 that divides 66720 without a remainder.

1, 2, 5, 10, 6673, 13346, 33365

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 66720 and 66730. The biggest common factor number is the GCF number.
So the greatest common factor 66720 and 66730 is 10.

Also check out the Least Common Multiple of 66720 and 66730