LCM of 549, 780, 351, 921
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 549, 780, 351, 921 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 549, 780, 351, 921. So, keep reading to learn more.
Given numbers are 549,780,351,921
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 549,780,351,921 is 131463540.
Find LCM of 549,780,351,921 with Prime Factorization
| 3 | 549, 780, 351, 921 |
| 3 | 183, 260, 117, 307 |
| 13 | 61, 260, 39, 307 |
| 61, 20, 3, 307 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 13 x 61 x 20 x 3 x 307 = 131463540
Therefore, the lowest common multiple of 549,780,351,921 is 131463540.
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.
549 x 780 x 351 x 921 = 138431107620
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.
549 : 1, 3, 9, 61, 183, 549
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
351 : 1, 3, 9, 13, 27, 39, 117, 351
921 : 1, 3, 307, 921
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 549,780,351,921, is 3.
Now, the common factors can be found like this.
549:3x 3x 61
780:2x 2x 3x 5x 13
351:3x 3x 3x 13
921:3x 307
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 3x 13 = 351
Therefore, the value for common factors is 351.
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 = 138431107620/(3x351)
LCM = 138431107620/1053
LCM = 131463540
Thus, we can understand that the LCM of 549,780,351,921 is 131463540.
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FAQs on LCM of 549, 780, 351, 921
1. What is the LCM of 549, 780, 351, 921?
Answer: LCM of 549, 780, 351, 921 is 131463540.
2. How to calculate the LCM of 549, 780, 351, 921?
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 549, 780, 351, 921.
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}.