What is the Greatest Common Factor of 1668 and 1684?

Greatest common factor (GCF) of 1668 and 1684 is 4.

GCF(1668,1684) = 4

We will now calculate the prime factors of 1668 and 1684, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1668 and 1684.

How to find the GCF of 1668 and 1684?

We will first find the prime factorization of 1668 and 1684. After we will calculate the factors of 1668 and 1684 and find the biggest common factor number .

Step-1: Prime Factorization of 1668

Prime factors of 1668 are 2, 3, 139. Prime factorization of 1668 in exponential form is:

1668 = 2² × 3¹ × 139¹

Step-2: Prime Factorization of 1684

Prime factors of 1684 are 2, 421. Prime factorization of 1684 in exponential form is:

1684 = 2² × 421¹

Step-3: Factors of 1668

List of positive integer factors of 1668 that divides 1668 without a remainder.

1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834

Step-4: Factors of 1684

List of positive integer factors of 1684 that divides 1668 without a remainder.

1, 2, 4, 421, 842

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1668 and 1684. The biggest common factor number is the GCF number.
So the greatest common factor 1668 and 1684 is 4.

Also check out the Least Common Multiple of 1668 and 1684