LCM of 690, 689, 140, 651
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 690, 689, 140, 651 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 690, 689, 140, 651. So, keep reading to learn more.
Given numbers are 690,689,140,651
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 690,689,140,651 is 206327940.
Find LCM of 690,689,140,651 with Prime Factorization
| 2 | 690, 689, 140, 651 |
| 3 | 345, 689, 70, 651 |
| 5 | 115, 689, 70, 217 |
| 7 | 23, 689, 14, 217 |
| 23, 689, 2, 31 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 7 x 23 x 689 x 2 x 31 = 206327940
Therefore, the lowest common multiple of 690,689,140,651 is 206327940.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
690 x 689 x 140 x 651 = 43328867400
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
689 : 1, 13, 53, 689
140 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
651 : 1, 3, 7, 21, 31, 93, 217, 651
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 690,689,140,651, is 1.
Now, the common factors can be found like this.
690:2x 3x 5x 23
689:13x 53
140:2x 2x 5x 7
651:3x 7x 31
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 5x 7 = 210
Therefore, the value for common factors is 210.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 43328867400/(1x210)
LCM = 43328867400/210
LCM = 206327940
Thus, we can understand that the LCM of 690,689,140,651 is 206327940.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 690, 689, 140, 651
1. What is the LCM of 690, 689, 140, 651?
Answer: LCM of 690, 689, 140, 651 is 206327940.
2. How to calculate the LCM of 690, 689, 140, 651?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 690, 689, 140, 651.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.