LCM of 742, 819, 640, 736
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 742, 819, 640, 736 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 742, 819, 640, 736. So, keep reading to learn more.
Given numbers are 742,819,640,736
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 742,819,640,736 is 638951040.
Find LCM of 742,819,640,736 with Prime Factorization
| 2 | 742, 819, 640, 736 |
| 2 | 371, 819, 320, 368 |
| 2 | 371, 819, 160, 184 |
| 2 | 371, 819, 80, 92 |
| 2 | 371, 819, 40, 46 |
| 7 | 371, 819, 20, 23 |
| 53, 117, 20, 23 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 2 x 7 x 53 x 117 x 20 x 23 = 638951040
Therefore, the lowest common multiple of 742,819,640,736 is 638951040.
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.
742 x 819 x 640 x 736 = 286250065920
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.
742 : 1, 2, 7, 14, 53, 106, 371, 742
819 : 1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
736 : 1, 2, 4, 8, 16, 23, 32, 46, 92, 184, 368, 736
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 742,819,640,736, is 1.
Now, the common factors can be found like this.
742:2x 7x 53
819:3x 3x 7x 13
640:2x 2x 2x 2x 2x 2x 2x 5
736:2x 2x 2x 2x 2x 23
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 7 = 448
Therefore, the value for common factors is 448.
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 = 286250065920/(1x448)
LCM = 286250065920/448
LCM = 638951040
Thus, we can understand that the LCM of 742,819,640,736 is 638951040.
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FAQs on LCM of 742, 819, 640, 736
1. What is the LCM of 742, 819, 640, 736?
Answer: LCM of 742, 819, 640, 736 is 638951040.
2. How to calculate the LCM of 742, 819, 640, 736?
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 742, 819, 640, 736.
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}.