LCM of 689, 217, 553, 961
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 689, 217, 553, 961 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 689, 217, 553, 961. So, keep reading to learn more.
Given numbers are 689,217,553,961
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 689,217,553,961 is 366157337.
Find LCM of 689,217,553,961 with Prime Factorization
| 7 | 689, 217, 553, 961 |
| 31 | 689, 31, 79, 961 |
| 689, 1, 79, 31 |
Multiply the prime numbers at the bottom and the left side.
7 x 31 x 689 x 1 x 79 x 31 = 366157337
Therefore, the lowest common multiple of 689,217,553,961 is 366157337.
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.
689 x 217 x 553 x 961 = 79456142129
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.
689 : 1, 13, 53, 689
217 : 1, 7, 31, 217
553 : 1, 7, 79, 553
961 : 1, 31, 961
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 689,217,553,961, is 1.
Now, the common factors can be found like this.
689:13x 53
217:7x 31
553:7x 79
961:31x 31
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
7x 31 = 217
Therefore, the value for common factors is 217.
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 = 79456142129/(1x217)
LCM = 79456142129/217
LCM = 366157337
Thus, we can understand that the LCM of 689,217,553,961 is 366157337.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 689, 217, 553, 961
1. What is the LCM of 689, 217, 553, 961?
Answer: LCM of 689, 217, 553, 961 is 366157337.
2. How to calculate the LCM of 689, 217, 553, 961?
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 689, 217, 553, 961.
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}.