LCM of 946, 803, 780, 640
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 946, 803, 780, 640 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 946, 803, 780, 640. So, keep reading to learn more.
Given numbers are 946,803,780,640
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 946,803,780,640 is 861843840.
Find LCM of 946,803,780,640 with Prime Factorization
| 2 | 946, 803, 780, 640 |
| 2 | 473, 803, 390, 320 |
| 5 | 473, 803, 195, 160 |
| 11 | 473, 803, 39, 32 |
| 43, 73, 39, 32 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 11 x 43 x 73 x 39 x 32 = 861843840
Therefore, the lowest common multiple of 946,803,780,640 is 861843840.
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.
946 x 803 x 780 x 640 = 379211289600
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.
946 : 1, 2, 11, 22, 43, 86, 473, 946
803 : 1, 11, 73, 803
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
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 946,803,780,640, is 1.
Now, the common factors can be found like this.
946:2x 11x 43
803:11x 73
780:2x 2x 3x 5x 13
640:2x 2x 2x 2x 2x 2x 2x 5
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 5x 11 = 440
Therefore, the value for common factors is 440.
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 = 379211289600/(1x440)
LCM = 379211289600/440
LCM = 861843840
Thus, we can understand that the LCM of 946,803,780,640 is 861843840.
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FAQs on LCM of 946, 803, 780, 640
1. What is the LCM of 946, 803, 780, 640?
Answer: LCM of 946, 803, 780, 640 is 861843840.
2. How to calculate the LCM of 946, 803, 780, 640?
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 946, 803, 780, 640.
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}.