LCM of 722, 690, 921, 393
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 722, 690, 921, 393 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, 690, 921, 393. So, keep reading to learn more.
Given numbers are 722,690,921,393
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 722,690,921,393 is 10017652530.
Find LCM of 722,690,921,393 with Prime Factorization
| 2 | 722, 690, 921, 393 |
| 3 | 361, 345, 921, 393 |
| 361, 115, 307, 131 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 361 x 115 x 307 x 131 = 10017652530
Therefore, the lowest common multiple of 722,690,921,393 is 10017652530.
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 690 x 921 x 393 = 180317745540
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
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
921 : 1, 3, 307, 921
393 : 1, 3, 131, 393
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 722,690,921,393, is 1.
Now, the common factors can be found like this.
722:2x 19x 19
690:2x 3x 5x 23
921:3x 307
393:3x 131
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3 = 18
Therefore, the value for common factors is 18.
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 = 180317745540/(1x18)
LCM = 180317745540/18
LCM = 10017652530
Thus, we can understand that the LCM of 722,690,921,393 is 10017652530.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 722, 690, 921, 393
1. What is the LCM of 722, 690, 921, 393?
Answer: LCM of 722, 690, 921, 393 is 10017652530.
2. How to calculate the LCM of 722, 690, 921, 393?
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, 690, 921, 393.
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}.