LCM of 945, 672, 787, 920
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 945, 672, 787, 920 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 945, 672, 787, 920. So, keep reading to learn more.
Given numbers are 945,672,787,920
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 945,672,787,920 is 547374240.
Find LCM of 945,672,787,920 with Prime Factorization
| 2 | 945, 672, 787, 920 |
| 2 | 945, 336, 787, 460 |
| 2 | 945, 168, 787, 230 |
| 3 | 945, 84, 787, 115 |
| 5 | 315, 28, 787, 115 |
| 7 | 63, 28, 787, 23 |
| 9, 4, 787, 23 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 7 x 9 x 4 x 787 x 23 = 547374240
Therefore, the lowest common multiple of 945,672,787,920 is 547374240.
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.
945 x 672 x 787 x 920 = 459794361600
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.
945 : 1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945
672 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672
787 : 1, 787
920 : 1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 945,672,787,920, is 1.
Now, the common factors can be found like this.
945:3x 3x 3x 5x 7
672:2x 2x 2x 2x 2x 3x 7
787:787
920:2x 2x 2x 5x 23
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 3x 5x 7 = 840
Therefore, the value for common factors is 840.
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 = 459794361600/(1x840)
LCM = 459794361600/840
LCM = 547374240
Thus, we can understand that the LCM of 945,672,787,920 is 547374240.
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FAQs on LCM of 945, 672, 787, 920
1. What is the LCM of 945, 672, 787, 920?
Answer: LCM of 945, 672, 787, 920 is 547374240.
2. How to calculate the LCM of 945, 672, 787, 920?
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 945, 672, 787, 920.
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}.