LCM of 648, 684, 784, 746, 638
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 648, 684, 784, 746, 638 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 648, 684, 784, 746, 638. So, keep reading to learn more.
Given numbers are 648,684,784,746,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 648,684,784,746,638 is 143566858512.
Find LCM of 648,684,784,746,638 with Prime Factorization
| 2 | 648, 684, 784, 746, 638 |
| 2 | 324, 342, 392, 373, 319 |
| 2 | 162, 171, 196, 373, 319 |
| 3 | 81, 171, 98, 373, 319 |
| 3 | 27, 57, 98, 373, 319 |
| 9, 19, 98, 373, 319 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 3 x 9 x 19 x 98 x 373 x 319 = 143566858512
Therefore, the lowest common multiple of 648,684,784,746,638 is 143566858512.
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.
648 x 684 x 784 x 746 x 638 = 165389021005824
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.
648 : 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
684 : 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
746 : 1, 2, 373, 746
638 : 1, 2, 11, 22, 29, 58, 319, 638
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 648,684,784,746,638, is 2.
Now, the common factors can be found like this.
648:2x 2x 2x 3x 3x 3x 3
684:2x 2x 3x 3x 19
784:2x 2x 2x 2x 7x 7
746:2x 373
638:2x 11x 29
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 2x 2x 2x 2x 3x 3 = 576
Therefore, the value for common factors is 576.
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 = 165389021005824/(2x576)
LCM = 165389021005824/1152
LCM = 143566858512
Thus, we can understand that the LCM of 648,684,784,746,638 is 143566858512.
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FAQs on LCM of 648, 684, 784, 746, 638
1. What is the LCM of 648, 684, 784, 746, 638?
Answer: LCM of 648, 684, 784, 746, 638 is 143566858512.
2. How to calculate the LCM of 648, 684, 784, 746, 638?
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 648, 684, 784, 746, 638.
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}.