Greatest Common Factor of 1605 and 1611

Created By : Jatin Gogia

Reviewed By : Rajasekhar Valipishetty

Last Updated : Apr 06, 2023

Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 1605, 1611 i.e. 3 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1605 and 1611 is 3.

GCF(1605,1611) = 3

GCF of 1605 and 1611

Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;

GCF of:
and

Greatest Common Factor of 1605 and 1611

GCF of 1605 and 1611 is 3

Prime Factorization of 1605


3 1605
5 535
107 107
1

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

1605 = 31×51×1071

Prime Factorization of 1611


3 1611
3 537
179 179
1

Prime factors of 1611 are 3,179. Prime factorization of 1611 in exponential form is:

1611 = 32×1791

∴ So by taking common prime factors GCF of 1605 and 1611 is 3

Greatest Common Factor of 1605 and 1611 by matching factors method

Factors of 1605

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

1,3,5,15,107,321,535,1605

Factors of 1611

List of positive integer factors of 1611 that divides 1611 without a remainder.

1,3,9,179,537,1611

Greatest Common Factor

We found the factors and prime factorization of 1605 and 1611. The biggest common factor number is the GCF number.
So the greatest common factor 1605 and 1611 is 3.

Also check out the Least Common Multiple of 1605 and 1611

Properties of GCF 1605 and 1611

(i) The GCF of 1605 and 1611 is associative

GCF of 1605 and 1611 = GCF of 1611 and 1605

Related Greatest Common Factor of 1605

Related Greatest Common Factor of 1611

Frequently Asked Questions on GCF of 1605 and 1611

1. What is the GCF of 1605 and 1611?

Answer: GCF of 1605 and 1611 is 3.

2. What are the Factors of 1605?

Answer: Factors of 1605 are 1, 3, 5, 15, 107, 321, 535, 1605. There are 8 integers that are factors of 1605. The greatest factor of 1605 is 1605.

3. What are the Factors of 1611?

Answer: Factors of 1611 are 1, 3, 9, 179, 537, 1611. There are 6 integers that are factors of 1611. The greatest factor of 1611 is 1611.

4. How to Find the GCF of 1605 and 1611?

Answer:

Greatest Common Factor of 1605 and 1611 = 3

Step 1: Find the prime factorization of 1605

1605 = 3 x 5 x 107

Step 2: Find the prime factorization of 1611

1611 = 3 x 3 x 179

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = 3

Step 4: Therefore, the greatest common factor of 1605 and 1611 is 3