LCM of 721, 717, 971, 393
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 717, 971, 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 721, 717, 971, 393. So, keep reading to learn more.
Given numbers are 721,717,971,393
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,717,971,393 is 65757447357.
Find LCM of 721,717,971,393 with Prime Factorization
| 3 | 721, 717, 971, 393 |
| 721, 239, 971, 131 |
Multiply the prime numbers at the bottom and the left side.
3 x 721 x 239 x 971 x 131 = 65757447357
Therefore, the lowest common multiple of 721,717,971,393 is 65757447357.
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.
721 x 717 x 971 x 393 = 197272342071
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.
721 : 1, 7, 103, 721
717 : 1, 3, 239, 717
971 : 1, 971
393 : 1, 3, 131, 393
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,717,971,393, is 1.
Now, the common factors can be found like this.
721:7x 103
717:3x 239
971:971
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.
3 = 3
Therefore, the value for common factors is 3.
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 = 197272342071/(1x3)
LCM = 197272342071/3
LCM = 65757447357
Thus, we can understand that the LCM of 721,717,971,393 is 65757447357.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 721, 717, 971, 393
1. What is the LCM of 721, 717, 971, 393?
Answer: LCM of 721, 717, 971, 393 is 65757447357.
2. How to calculate the LCM of 721, 717, 971, 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 721, 717, 971, 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}.