LCM of 872, 391, 780, 520
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 872, 391, 780, 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 872, 391, 780, 520. So, keep reading to learn more.
Given numbers are 872,391,780,520
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 872,391,780,520 is 66485640.
Find LCM of 872,391,780,520 with Prime Factorization
| 2 | 872, 391, 780, 520 |
| 2 | 436, 391, 390, 260 |
| 2 | 218, 391, 195, 130 |
| 5 | 109, 391, 195, 65 |
| 13 | 109, 391, 39, 13 |
| 109, 391, 3, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 13 x 109 x 391 x 3 x 1 = 66485640
Therefore, the lowest common multiple of 872,391,780,520 is 66485640.
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.
872 x 391 x 780 x 520 = 138290131200
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.
872 : 1, 2, 4, 8, 109, 218, 436, 872
391 : 1, 17, 23, 391
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
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 872,391,780,520, is 1.
Now, the common factors can be found like this.
872:2x 2x 2x 109
391:17x 23
780:2x 2x 3x 5x 13
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 2x 2x 2x 2x 5x 13 = 2080
Therefore, the value for common factors is 2080.
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 = 138290131200/(1x2080)
LCM = 138290131200/2080
LCM = 66485640
Thus, we can understand that the LCM of 872,391,780,520 is 66485640.
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FAQs on LCM of 872, 391, 780, 520
1. What is the LCM of 872, 391, 780, 520?
Answer: LCM of 872, 391, 780, 520 is 66485640.
2. How to calculate the LCM of 872, 391, 780, 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 872, 391, 780, 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}.