LCM of 861, 661, 478, 553, 968
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 861, 661, 478, 553, 968 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 861, 661, 478, 553, 968. So, keep reading to learn more.
Given numbers are 861,661,478,553,968
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 861,661,478,553,968 is 10401715245768.
Find LCM of 861,661,478,553,968 with Prime Factorization
| 2 | 861, 661, 478, 553, 968 |
| 7 | 861, 661, 239, 553, 484 |
| 123, 661, 239, 79, 484 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 123 x 661 x 239 x 79 x 484 = 10401715245768
Therefore, the lowest common multiple of 861,661,478,553,968 is 10401715245768.
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.
861 x 661 x 478 x 553 x 968 = 145624013440752
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.
861 : 1, 3, 7, 21, 41, 123, 287, 861
661 : 1, 661
478 : 1, 2, 239, 478
553 : 1, 7, 79, 553
968 : 1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 861,661,478,553,968, is 1.
Now, the common factors can be found like this.
861:3x 7x 41
661:661
478:2x 239
553:7x 79
968:2x 2x 2x 11x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 7 = 14
Therefore, the value for common factors is 14.
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 = 145624013440752/(1x14)
LCM = 145624013440752/14
LCM = 10401715245768
Thus, we can understand that the LCM of 861,661,478,553,968 is 10401715245768.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 861, 661, 478, 553, 968
1. What is the LCM of 861, 661, 478, 553, 968?
Answer: LCM of 861, 661, 478, 553, 968 is 10401715245768.
2. How to calculate the LCM of 861, 661, 478, 553, 968?
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 861, 661, 478, 553, 968.
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}.