LCM of 947, 640, 138, 215, 770
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 947, 640, 138, 215, 770 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 947, 640, 138, 215, 770. So, keep reading to learn more.
Given numbers are 947,640,138,215,770
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 947,640,138,215,770 is 138464430720.
Find LCM of 947,640,138,215,770 with Prime Factorization
| 2 | 947, 640, 138, 215, 770 |
| 5 | 947, 320, 69, 215, 385 |
| 947, 64, 69, 43, 77 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 947 x 64 x 69 x 43 x 77 = 138464430720
Therefore, the lowest common multiple of 947,640,138,215,770 is 138464430720.
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.
947 x 640 x 138 x 215 x 770 = 13846443072000
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.
947 : 1, 947
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
138 : 1, 2, 3, 6, 23, 46, 69, 138
215 : 1, 5, 43, 215
770 : 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 947,640,138,215,770, is 1.
Now, the common factors can be found like this.
947:947
640:2x 2x 2x 2x 2x 2x 2x 5
138:2x 3x 23
215:5x 43
770:2x 5x 7x 11
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 5x 5 = 100
Therefore, the value for common factors is 100.
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 = 13846443072000/(1x100)
LCM = 13846443072000/100
LCM = 138464430720
Thus, we can understand that the LCM of 947,640,138,215,770 is 138464430720.
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FAQs on LCM of 947, 640, 138, 215, 770
1. What is the LCM of 947, 640, 138, 215, 770?
Answer: LCM of 947, 640, 138, 215, 770 is 138464430720.
2. How to calculate the LCM of 947, 640, 138, 215, 770?
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 947, 640, 138, 215, 770.
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}.