Greatest Common Factor of 1540 and 1543

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 1540, 1543 i.e. 1 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 1540 and 1543 is 1.

GCF(1540,1543) = 1

GCF of 1540 and 1543

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

GCF of:
and

Greatest Common Factor of 1540 and 1543

GCF of 1540 and 1543 is 1

Prime Factorization of 1540


2 1540
2 770
5 385
7 77
11 11
1

Prime factors of 1540 are 2,5,7,11. Prime factorization of 1540 in exponential form is:

1540 = 22×51×71×111

Prime Factorization of 1543


1543 1543
1

Prime factors of 1543 are 1543. Prime factorization of 1543 in exponential form is:

1543 = 15431

∴ So by taking common prime factors GCF of 1540 and 1543 is 1

Greatest Common Factor of 1540 and 1543 by matching factors method

Factors of 1540

List of positive integer factors of 1540 that divides 1540 without a remainder.

1,2,4,5,7,10,11,14,20,22,28,35,44,55,70,77,110,140,154,220,308,385,770,1540

Factors of 1543

List of positive integer factors of 1543 that divides 1543 without a remainder.

1,1543

Greatest Common Factor

We found the factors and prime factorization of 1540 and 1543. The biggest common factor number is the GCF number.
So the greatest common factor 1540 and 1543 is 1.

Also check out the Least Common Multiple of 1540 and 1543

Properties of GCF 1540 and 1543

(i) The GCF of 1540 and 1543 is associative

GCF of 1540 and 1543 = GCF of 1543 and 1540

Related Greatest Common Factor of 1540

Related Greatest Common Factor of 1543

Frequently Asked Questions on GCF of 1540 and 1543

1. What is the GCF of 1540 and 1543?

Answer: GCF of 1540 and 1543 is 1.

2. What are the Factors of 1540?

Answer: Factors of 1540 are 1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540. There are 24 integers that are factors of 1540. The greatest factor of 1540 is 1540.

3. What are the Factors of 1543?

Answer: Factors of 1543 are 1, 1543. There are 2 integers that are factors of 1543. The greatest factor of 1543 is 1543.

4. How to Find the GCF of 1540 and 1543?

Answer:

Greatest Common Factor of 1540 and 1543 = 1

Step 1: Find the prime factorization of 1540

1540 = 2 x 2 x 5 x 7 x 11

Step 2: Find the prime factorization of 1543

1543 = 1543

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

GCF = = 1

Step 4: Therefore, the greatest common factor of 1540 and 1543 is 1