LCM of 721, 494, 817, 520
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 721, 494, 817, 520 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, 494, 817, 520. So, keep reading to learn more.
Given numbers are 721,494,817,520
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 721,494,817,520 is 306309640.
Find LCM of 721,494,817,520 with Prime Factorization
| 2 | 721, 494, 817, 520 |
| 13 | 721, 247, 817, 260 |
| 19 | 721, 19, 817, 20 |
| 721, 1, 43, 20 |
Multiply the prime numbers at the bottom and the left side.
2 x 13 x 19 x 721 x 1 x 43 x 20 = 306309640
Therefore, the lowest common multiple of 721,494,817,520 is 306309640.
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 494 x 817 x 520 = 151316962160
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
494 : 1, 2, 13, 19, 26, 38, 247, 494
817 : 1, 19, 43, 817
520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 721,494,817,520, is 1.
Now, the common factors can be found like this.
721:7x 103
494:2x 13x 19
817:19x 43
520:2x 2x 2x 5x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 13x 19 = 494
Therefore, the value for common factors is 494.
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 = 151316962160/(1x494)
LCM = 151316962160/494
LCM = 306309640
Thus, we can understand that the LCM of 721,494,817,520 is 306309640.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 721, 494, 817, 520
1. What is the LCM of 721, 494, 817, 520?
Answer: LCM of 721, 494, 817, 520 is 306309640.
2. How to calculate the LCM of 721, 494, 817, 520?
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, 494, 817, 520.
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}.