LCM of 639, 781, 968, 813
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 639, 781, 968, 813 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 639, 781, 968, 813. So, keep reading to learn more.
Given numbers are 639,781,968,813
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 639,781,968,813 is 167627592.
Find LCM of 639,781,968,813 with Prime Factorization
| 3 | 639, 781, 968, 813 |
| 11 | 213, 781, 968, 271 |
| 71 | 213, 71, 88, 271 |
| 3, 1, 88, 271 |
Multiply the prime numbers at the bottom and the left side.
3 x 11 x 71 x 3 x 1 x 88 x 271 = 167627592
Therefore, the lowest common multiple of 639,781,968,813 is 167627592.
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.
639 x 781 x 968 x 813 = 392751448056
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.
639 : 1, 3, 9, 71, 213, 639
781 : 1, 11, 71, 781
968 : 1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968
813 : 1, 3, 271, 813
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,781,968,813, is 1.
Now, the common factors can be found like this.
639:3x 3x 71
781:11x 71
968:2x 2x 2x 11x 11
813:3x 271
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 11x 71 = 2343
Therefore, the value for common factors is 2343.
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 = 392751448056/(1x2343)
LCM = 392751448056/2343
LCM = 167627592
Thus, we can understand that the LCM of 639,781,968,813 is 167627592.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 639, 781, 968, 813
1. What is the LCM of 639, 781, 968, 813?
Answer: LCM of 639, 781, 968, 813 is 167627592.
2. How to calculate the LCM of 639, 781, 968, 813?
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 639, 781, 968, 813.
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}.