LCM of 784, 721, 616, 676
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 784, 721, 616, 676 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 784, 721, 616, 676. So, keep reading to learn more.
Given numbers are 784,721,616,676
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 784,721,616,676 is 150117968.
Find LCM of 784,721,616,676 with Prime Factorization
| 2 | 784, 721, 616, 676 |
| 2 | 392, 721, 308, 338 |
| 2 | 196, 721, 154, 169 |
| 7 | 98, 721, 77, 169 |
| 14, 103, 11, 169 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 7 x 14 x 103 x 11 x 169 = 150117968
Therefore, the lowest common multiple of 784,721,616,676 is 150117968.
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.
784 x 721 x 616 x 676 = 235384973824
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.
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
721 : 1, 7, 103, 721
616 : 1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 308, 616
676 : 1, 2, 4, 13, 26, 52, 169, 338, 676
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 784,721,616,676, is 1.
Now, the common factors can be found like this.
784:2x 2x 2x 2x 7x 7
721:7x 103
616:2x 2x 2x 7x 11
676:2x 2x 13x 13
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 7x 7 = 1568
Therefore, the value for common factors is 1568.
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 = 235384973824/(1x1568)
LCM = 235384973824/1568
LCM = 150117968
Thus, we can understand that the LCM of 784,721,616,676 is 150117968.
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FAQs on LCM of 784, 721, 616, 676
1. What is the LCM of 784, 721, 616, 676?
Answer: LCM of 784, 721, 616, 676 is 150117968.
2. How to calculate the LCM of 784, 721, 616, 676?
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 784, 721, 616, 676.
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}.