LCM of 821, 724, 815, 770
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 821, 724, 815, 770 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 821, 724, 815, 770. So, keep reading to learn more.
Given numbers are 821,724,815,770
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 821,724,815,770 is 37301823020.
Find LCM of 821,724,815,770 with Prime Factorization
| 2 | 821, 724, 815, 770 |
| 5 | 821, 362, 815, 385 |
| 821, 362, 163, 77 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 821 x 362 x 163 x 77 = 37301823020
Therefore, the lowest common multiple of 821,724,815,770 is 37301823020.
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.
821 x 724 x 815 x 770 = 373018230200
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.
821 : 1, 821
724 : 1, 2, 4, 181, 362, 724
815 : 1, 5, 163, 815
770 : 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 821,724,815,770, is 1.
Now, the common factors can be found like this.
821:821
724:2x 2x 181
815:5x 163
770:2x 5x 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 5 = 10
Therefore, the value for common factors is 10.
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 = 373018230200/(1x10)
LCM = 373018230200/10
LCM = 37301823020
Thus, we can understand that the LCM of 821,724,815,770 is 37301823020.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 821, 724, 815, 770
1. What is the LCM of 821, 724, 815, 770?
Answer: LCM of 821, 724, 815, 770 is 37301823020.
2. How to calculate the LCM of 821, 724, 815, 770?
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 821, 724, 815, 770.
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}.