What is the Greatest Common Factor of 16665 and 16680?

Greatest common factor (GCF) of 16665 and 16680 is 15.

GCF(16665,16680) = 15

We will now calculate the prime factors of 16665 and 16680, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 16665 and 16680.

How to find the GCF of 16665 and 16680?

We will first find the prime factorization of 16665 and 16680. After we will calculate the factors of 16665 and 16680 and find the biggest common factor number .

Step-1: Prime Factorization of 16665

Prime factors of 16665 are 3, 5, 11, 101. Prime factorization of 16665 in exponential form is:

16665 = 3¹ × 5¹ × 11¹ × 101¹

Step-2: Prime Factorization of 16680

Prime factors of 16680 are 2, 3, 5, 139. Prime factorization of 16680 in exponential form is:

16680 = 2³ × 3¹ × 5¹ × 139¹

Step-3: Factors of 16665

List of positive integer factors of 16665 that divides 16665 without a remainder.

1, 3, 5, 11, 15, 33, 55, 101, 165, 303, 505, 1111, 1515, 3333, 5555

Step-4: Factors of 16680

List of positive integer factors of 16680 that divides 16665 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 139, 278, 417, 556, 695, 834, 1112, 1390, 1668, 2085, 2780, 3336, 4170, 5560, 8340

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 16665 and 16680. The biggest common factor number is the GCF number.
So the greatest common factor 16665 and 16680 is 15.

Also check out the Least Common Multiple of 16665 and 16680