LCM of 787, 638, 217, 154
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 787, 638, 217, 154 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 787, 638, 217, 154. So, keep reading to learn more.
Given numbers are 787,638,217,154
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 787,638,217,154 is 108957002.
Find LCM of 787,638,217,154 with Prime Factorization
| 2 | 787, 638, 217, 154 |
| 7 | 787, 319, 217, 77 |
| 11 | 787, 319, 31, 11 |
| 787, 29, 31, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 11 x 787 x 29 x 31 x 1 = 108957002
Therefore, the lowest common multiple of 787,638,217,154 is 108957002.
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.
787 x 638 x 217 x 154 = 16779378308
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.
787 : 1, 787
638 : 1, 2, 11, 22, 29, 58, 319, 638
217 : 1, 7, 31, 217
154 : 1, 2, 7, 11, 14, 22, 77, 154
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 787,638,217,154, is 1.
Now, the common factors can be found like this.
787:787
638:2x 11x 29
217:7x 31
154:2x 7x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 7x 11 = 154
Therefore, the value for common factors is 154.
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 = 16779378308/(1x154)
LCM = 16779378308/154
LCM = 108957002
Thus, we can understand that the LCM of 787,638,217,154 is 108957002.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 787, 638, 217, 154
1. What is the LCM of 787, 638, 217, 154?
Answer: LCM of 787, 638, 217, 154 is 108957002.
2. How to calculate the LCM of 787, 638, 217, 154?
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 787, 638, 217, 154.
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}.