What is the Greatest Common Factor of 1660 and 1664?

Greatest common factor (GCF) of 1660 and 1664 is 4.

GCF(1660,1664) = 4

We will now calculate the prime factors of 1660 and 1664, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1660 and 1664.

How to find the GCF of 1660 and 1664?

We will first find the prime factorization of 1660 and 1664. After we will calculate the factors of 1660 and 1664 and find the biggest common factor number .

Step-1: Prime Factorization of 1660

Prime factors of 1660 are 2, 5, 83. Prime factorization of 1660 in exponential form is:

1660 = 2² × 5¹ × 83¹

Step-2: Prime Factorization of 1664

Prime factors of 1664 are 2, 13. Prime factorization of 1664 in exponential form is:

1664 = 2⁷ × 13¹

Step-3: Factors of 1660

List of positive integer factors of 1660 that divides 1660 without a remainder.

1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830

Step-4: Factors of 1664

List of positive integer factors of 1664 that divides 1660 without a remainder.

1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1660 and 1664. The biggest common factor number is the GCF number.
So the greatest common factor 1660 and 1664 is 4.

Also check out the Least Common Multiple of 1660 and 1664