LCM of 901, 840, 640, 947
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 901, 840, 640, 947 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 901, 840, 640, 947. So, keep reading to learn more.
Given numbers are 901,840,640,947
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 901,840,640,947 is 11467639680.
Find LCM of 901,840,640,947 with Prime Factorization
| 2 | 901, 840, 640, 947 |
| 2 | 901, 420, 320, 947 |
| 2 | 901, 210, 160, 947 |
| 5 | 901, 105, 80, 947 |
| 901, 21, 16, 947 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 901 x 21 x 16 x 947 = 11467639680
Therefore, the lowest common multiple of 901,840,640,947 is 11467639680.
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.
901 x 840 x 640 x 947 = 458705587200
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.
901 : 1, 17, 53, 901
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
947 : 1, 947
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 901,840,640,947, is 1.
Now, the common factors can be found like this.
901:17x 53
840:2x 2x 2x 3x 5x 7
640:2x 2x 2x 2x 2x 2x 2x 5
947:947
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 5 = 40
Therefore, the value for common factors is 40.
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 = 458705587200/(1x40)
LCM = 458705587200/40
LCM = 11467639680
Thus, we can understand that the LCM of 901,840,640,947 is 11467639680.
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FAQs on LCM of 901, 840, 640, 947
1. What is the LCM of 901, 840, 640, 947?
Answer: LCM of 901, 840, 640, 947 is 11467639680.
2. How to calculate the LCM of 901, 840, 640, 947?
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 901, 840, 640, 947.
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}.