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 1687, 1689 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1687 and 1689 is 1.
GCF(1687,1689) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 1687
7 | 1687 |
241 | 241 |
1 |
Prime factors of 1687 are 7,241. Prime factorization of 1687 in exponential form is:
1687 = 71×2411
Prime Factorization of 1689
3 | 1689 |
563 | 563 |
1 |
Prime factors of 1689 are 3,563. Prime factorization of 1689 in exponential form is:
1689 = 31×5631
∴ So by taking common prime factors GCF of 1687 and 1689 is 1
Factors of 1687
List of positive integer factors of 1687 that divides 1687 without a remainder.
1,7,241,1687
Factors of 1689
List of positive integer factors of 1689 that divides 1689 without a remainder.
1,3,563,1689
Greatest Common Factor
We found the factors and prime factorization of 1687 and 1689. The biggest common factor number is the GCF number.
So the greatest common factor 1687 and 1689 is 1.
Also check out the Least Common Multiple of 1687 and 1689
(i) The GCF of 1687 and 1689 is associative
GCF of 1687 and 1689 = GCF of 1689 and 1687
1. What is the GCF of 1687 and 1689?
Answer: GCF of 1687 and 1689 is 1.
2. What are the Factors of 1687?
Answer: Factors of 1687 are 1, 7, 241, 1687. There are 4 integers that are factors of 1687. The greatest factor of 1687 is 1687.
3. What are the Factors of 1689?
Answer: Factors of 1689 are 1, 3, 563, 1689. There are 4 integers that are factors of 1689. The greatest factor of 1689 is 1689.
4. How to Find the GCF of 1687 and 1689?
Answer:
Greatest Common Factor of 1687 and 1689 = 1
Step 1: Find the prime factorization of 1687
1687 = 7 x 241
Step 2: Find the prime factorization of 1689
1689 = 3 x 563
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 1687 and 1689 is 1