What is the Greatest Common Factor of 1605 and 1613?

Greatest common factor (GCF) of 1605 and 1613 is 1.

GCF(1605,1613) = 1

We will now calculate the prime factors of 1605 and 1613, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 1605 and 1613.

How to find the GCF of 1605 and 1613?

We will first find the prime factorization of 1605 and 1613. After we will calculate the factors of 1605 and 1613 and find the biggest common factor number .

Step-1: Prime Factorization of 1605

Prime factors of 1605 are 3, 5, 107. Prime factorization of 1605 in exponential form is:

1605 = 3¹ × 5¹ × 107¹

Step-2: Prime Factorization of 1613

Prime factors of 1613 are 1613. Prime factorization of 1613 in exponential form is:

1613 = 1613¹

Step-3: Factors of 1605

List of positive integer factors of 1605 that divides 1605 without a remainder.

1, 3, 5, 15, 107, 321, 535

Step-4: Factors of 1613

List of positive integer factors of 1613 that divides 1605 without a remainder.

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 1605 and 1613. The biggest common factor number is the GCF number.
So the greatest common factor 1605 and 1613 is 1.

Also check out the Least Common Multiple of 1605 and 1613