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 1688, 1690 i.e. 2 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1688 and 1690 is 2.
GCF(1688,1690) = 2
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 1688
2 | 1688 |
2 | 844 |
2 | 422 |
211 | 211 |
1 |
Prime factors of 1688 are 2,211. Prime factorization of 1688 in exponential form is:
1688 = 23×2111
Prime Factorization of 1690
2 | 1690 |
5 | 845 |
13 | 169 |
13 | 13 |
1 |
Prime factors of 1690 are 2,5,13. Prime factorization of 1690 in exponential form is:
1690 = 21×51×132
∴ So by taking common prime factors GCF of 1688 and 1690 is 2
Factors of 1688
List of positive integer factors of 1688 that divides 1688 without a remainder.
1,2,4,8,211,422,844,1688
Factors of 1690
List of positive integer factors of 1690 that divides 1690 without a remainder.
1,2,5,10,13,26,65,130,169,338,845,1690
Greatest Common Factor
We found the factors and prime factorization of 1688 and 1690. The biggest common factor number is the GCF number.
So the greatest common factor 1688 and 1690 is 2.
Also check out the Least Common Multiple of 1688 and 1690
(i) The GCF of 1688 and 1690 is associative
GCF of 1688 and 1690 = GCF of 1690 and 1688
1. What is the GCF of 1688 and 1690?
Answer: GCF of 1688 and 1690 is 2.
2. What are the Factors of 1688?
Answer: Factors of 1688 are 1, 2, 4, 8, 211, 422, 844, 1688. There are 8 integers that are factors of 1688. The greatest factor of 1688 is 1688.
3. What are the Factors of 1690?
Answer: Factors of 1690 are 1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690. There are 12 integers that are factors of 1690. The greatest factor of 1690 is 1690.
4. How to Find the GCF of 1688 and 1690?
Answer:
Greatest Common Factor of 1688 and 1690 = 2
Step 1: Find the prime factorization of 1688
1688 = 2 x 2 x 2 x 211
Step 2: Find the prime factorization of 1690
1690 = 2 x 5 x 13 x 13
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2
Step 4: Therefore, the greatest common factor of 1688 and 1690 is 2