LCM of 861, 942, 410, 755, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 861, 942, 410, 755, 642 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, 942, 410, 755, 642. So, keep reading to learn more.
Given numbers are 861,942,410,755,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 861,942,410,755,642 is 21840547890.
Find LCM of 861,942,410,755,642 with Prime Factorization
| 2 | 861, 942, 410, 755, 642 |
| 3 | 861, 471, 205, 755, 321 |
| 5 | 287, 157, 205, 755, 107 |
| 41 | 287, 157, 41, 151, 107 |
| 7, 157, 1, 151, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 41 x 7 x 157 x 1 x 151 x 107 = 21840547890
Therefore, the lowest common multiple of 861,942,410,755,642 is 21840547890.
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 942 x 410 x 755 x 642 = 161183243428200
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
942 : 1, 2, 3, 6, 157, 314, 471, 942
410 : 1, 2, 5, 10, 41, 82, 205, 410
755 : 1, 5, 151, 755
642 : 1, 2, 3, 6, 107, 214, 321, 642
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 861,942,410,755,642, is 1.
Now, the common factors can be found like this.
861:3x 7x 41
942:2x 3x 157
410:2x 5x 41
755:5x 151
642:2x 3x 107
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 3x 3x 5x 41 = 7380
Therefore, the value for common factors is 7380.
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 = 161183243428200/(1x7380)
LCM = 161183243428200/7380
LCM = 21840547890
Thus, we can understand that the LCM of 861,942,410,755,642 is 21840547890.
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FAQs on LCM of 861, 942, 410, 755, 642
1. What is the LCM of 861, 942, 410, 755, 642?
Answer: LCM of 861, 942, 410, 755, 642 is 21840547890.
2. How to calculate the LCM of 861, 942, 410, 755, 642?
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, 942, 410, 755, 642.
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}.