What is the Greatest Common Factor of 1602 and 1621?

Greatest common factor (GCF) of 1602 and 1621 is 1.

GCF(1602,1621) = 1

We will now calculate the prime factors of 1602 and 1621, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1602 and 1621.

How to find the GCF of 1602 and 1621?

We will first find the prime factorization of 1602 and 1621. After we will calculate the factors of 1602 and 1621 and find the biggest common factor number .

Step-1: Prime Factorization of 1602

Prime factors of 1602 are 2, 3, 89. Prime factorization of 1602 in exponential form is:

1602 = 2¹ × 3² × 89¹

Step-2: Prime Factorization of 1621

Prime factors of 1621 are 1621. Prime factorization of 1621 in exponential form is:

1621 = 1621¹

Step-3: Factors of 1602

List of positive integer factors of 1602 that divides 1602 without a remainder.

1, 2, 3, 6, 9, 18, 89, 178, 267, 534, 801

Step-4: Factors of 1621

List of positive integer factors of 1621 that divides 1602 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1602 and 1621. The biggest common factor number is the GCF number.
So the greatest common factor 1602 and 1621 is 1.

Also check out the Least Common Multiple of 1602 and 1621