LCM of 718, 420, 515, 438
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 718, 420, 515, 438 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 718, 420, 515, 438. So, keep reading to learn more.
Given numbers are 718,420,515,438
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 718,420,515,438 is 1133714820.
Find LCM of 718,420,515,438 with Prime Factorization
| 2 | 718, 420, 515, 438 |
| 3 | 359, 210, 515, 219 |
| 5 | 359, 70, 515, 73 |
| 359, 14, 103, 73 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 359 x 14 x 103 x 73 = 1133714820
Therefore, the lowest common multiple of 718,420,515,438 is 1133714820.
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.
718 x 420 x 515 x 438 = 68022889200
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.
718 : 1, 2, 359, 718
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
515 : 1, 5, 103, 515
438 : 1, 2, 3, 6, 73, 146, 219, 438
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 718,420,515,438, is 1.
Now, the common factors can be found like this.
718:2x 359
420:2x 2x 3x 5x 7
515:5x 103
438:2x 3x 73
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 5 = 60
Therefore, the value for common factors is 60.
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 = 68022889200/(1x60)
LCM = 68022889200/60
LCM = 1133714820
Thus, we can understand that the LCM of 718,420,515,438 is 1133714820.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 718, 420, 515, 438
1. What is the LCM of 718, 420, 515, 438?
Answer: LCM of 718, 420, 515, 438 is 1133714820.
2. How to calculate the LCM of 718, 420, 515, 438?
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 718, 420, 515, 438.
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}.