LCM of 813, 780, 221, 560
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 813, 780, 221, 560 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 813, 780, 221, 560. So, keep reading to learn more.
Given numbers are 813,780,221,560
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 813,780,221,560 is 100616880.
Find LCM of 813,780,221,560 with Prime Factorization
| 2 | 813, 780, 221, 560 |
| 2 | 813, 390, 221, 280 |
| 3 | 813, 195, 221, 140 |
| 5 | 271, 65, 221, 140 |
| 13 | 271, 13, 221, 28 |
| 271, 1, 17, 28 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 13 x 271 x 1 x 17 x 28 = 100616880
Therefore, the lowest common multiple of 813,780,221,560 is 100616880.
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.
813 x 780 x 221 x 560 = 78481166400
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.
813 : 1, 3, 271, 813
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
221 : 1, 13, 17, 221
560 : 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 813,780,221,560, is 1.
Now, the common factors can be found like this.
813:3x 271
780:2x 2x 3x 5x 13
221:13x 17
560:2x 2x 2x 2x 5x 7
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 3x 5x 13 = 780
Therefore, the value for common factors is 780.
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 = 78481166400/(1x780)
LCM = 78481166400/780
LCM = 100616880
Thus, we can understand that the LCM of 813,780,221,560 is 100616880.
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FAQs on LCM of 813, 780, 221, 560
1. What is the LCM of 813, 780, 221, 560?
Answer: LCM of 813, 780, 221, 560 is 100616880.
2. How to calculate the LCM of 813, 780, 221, 560?
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 813, 780, 221, 560.
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}.