LCM of 660, 921, 915, 854
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 660, 921, 915, 854 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 660, 921, 915, 854. So, keep reading to learn more.
Given numbers are 660,921,915,854
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 660,921,915,854 is 86518740.
Find LCM of 660,921,915,854 with Prime Factorization
| 2 | 660, 921, 915, 854 |
| 3 | 330, 921, 915, 427 |
| 5 | 110, 307, 305, 427 |
| 61 | 22, 307, 61, 427 |
| 22, 307, 1, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 61 x 22 x 307 x 1 x 7 = 86518740
Therefore, the lowest common multiple of 660,921,915,854 is 86518740.
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.
660 x 921 x 915 x 854 = 474987882600
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.
660 : 1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 165, 220, 330, 660
921 : 1, 3, 307, 921
915 : 1, 3, 5, 15, 61, 183, 305, 915
854 : 1, 2, 7, 14, 61, 122, 427, 854
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 660,921,915,854, is 1.
Now, the common factors can be found like this.
660:2x 2x 3x 5x 11
921:3x 307
915:3x 5x 61
854:2x 7x 61
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 5x 61 = 5490
Therefore, the value for common factors is 5490.
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 = 474987882600/(1x5490)
LCM = 474987882600/5490
LCM = 86518740
Thus, we can understand that the LCM of 660,921,915,854 is 86518740.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 660, 921, 915, 854
1. What is the LCM of 660, 921, 915, 854?
Answer: LCM of 660, 921, 915, 854 is 86518740.
2. How to calculate the LCM of 660, 921, 915, 854?
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 660, 921, 915, 854.
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}.