LCM of 722, 620, 391, 558
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 722, 620, 391, 558 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 722, 620, 391, 558. So, keep reading to learn more.
Given numbers are 722,620,391,558
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 722,620,391,558 is 787622580.
Find LCM of 722,620,391,558 with Prime Factorization
| 2 | 722, 620, 391, 558 |
| 31 | 361, 310, 391, 279 |
| 361, 10, 391, 9 |
Multiply the prime numbers at the bottom and the left side.
2 x 31 x 361 x 10 x 391 x 9 = 787622580
Therefore, the lowest common multiple of 722,620,391,558 is 787622580.
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.
722 x 620 x 391 x 558 = 97665199920
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.
722 : 1, 2, 19, 38, 361, 722
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
391 : 1, 17, 23, 391
558 : 1, 2, 3, 6, 9, 18, 31, 62, 93, 186, 279, 558
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 722,620,391,558, is 1.
Now, the common factors can be found like this.
722:2x 19x 19
620:2x 2x 5x 31
391:17x 23
558:2x 3x 3x 31
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 31 = 124
Therefore, the value for common factors is 124.
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 = 97665199920/(1x124)
LCM = 97665199920/124
LCM = 787622580
Thus, we can understand that the LCM of 722,620,391,558 is 787622580.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 722, 620, 391, 558
1. What is the LCM of 722, 620, 391, 558?
Answer: LCM of 722, 620, 391, 558 is 787622580.
2. How to calculate the LCM of 722, 620, 391, 558?
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 722, 620, 391, 558.
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}.