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 1635, 1643 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1635 and 1643 is 1.
GCF(1635,1643) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 1635
3 | 1635 |
5 | 545 |
109 | 109 |
1 |
Prime factors of 1635 are 3,5,109. Prime factorization of 1635 in exponential form is:
1635 = 31×51×1091
Prime Factorization of 1643
31 | 1643 |
53 | 53 |
1 |
Prime factors of 1643 are 31,53. Prime factorization of 1643 in exponential form is:
1643 = 311×531
∴ So by taking common prime factors GCF of 1635 and 1643 is 1
Factors of 1635
List of positive integer factors of 1635 that divides 1635 without a remainder.
1,3,5,15,109,327,545,1635
Factors of 1643
List of positive integer factors of 1643 that divides 1643 without a remainder.
1,31,53,1643
Greatest Common Factor
We found the factors and prime factorization of 1635 and 1643. The biggest common factor number is the GCF number.
So the greatest common factor 1635 and 1643 is 1.
Also check out the Least Common Multiple of 1635 and 1643
(i) The GCF of 1635 and 1643 is associative
GCF of 1635 and 1643 = GCF of 1643 and 1635
1. What is the GCF of 1635 and 1643?
Answer: GCF of 1635 and 1643 is 1.
2. What are the Factors of 1635?
Answer: Factors of 1635 are 1, 3, 5, 15, 109, 327, 545, 1635. There are 8 integers that are factors of 1635. The greatest factor of 1635 is 1635.
3. What are the Factors of 1643?
Answer: Factors of 1643 are 1, 31, 53, 1643. There are 4 integers that are factors of 1643. The greatest factor of 1643 is 1643.
4. How to Find the GCF of 1635 and 1643?
Answer:
Greatest Common Factor of 1635 and 1643 = 1
Step 1: Find the prime factorization of 1635
1635 = 3 x 5 x 109
Step 2: Find the prime factorization of 1643
1643 = 31 x 53
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 1635 and 1643 is 1