LCM of 560, 640, 646, 664
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 560, 640, 646, 664 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 560, 640, 646, 664. So, keep reading to learn more.
Given numbers are 560,640,646,664
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 560,640,646,664 is 120104320.
Find LCM of 560,640,646,664 with Prime Factorization
| 2 | 560, 640, 646, 664 |
| 2 | 280, 320, 323, 332 |
| 2 | 140, 160, 323, 166 |
| 2 | 70, 80, 323, 83 |
| 5 | 35, 40, 323, 83 |
| 7, 8, 323, 83 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 5 x 7 x 8 x 323 x 83 = 120104320
Therefore, the lowest common multiple of 560,640,646,664 is 120104320.
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.
560 x 640 x 646 x 664 = 153733529600
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.
560 : 1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
646 : 1, 2, 17, 19, 34, 38, 323, 646
664 : 1, 2, 4, 8, 83, 166, 332, 664
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 560,640,646,664, is 2.
Now, the common factors can be found like this.
560:2x 2x 2x 2x 5x 7
640:2x 2x 2x 2x 2x 2x 2x 5
646:2x 17x 19
664:2x 2x 2x 83
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 2x 2x 2x 2x 5 = 640
Therefore, the value for common factors is 640.
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 = 153733529600/(2x640)
LCM = 153733529600/1280
LCM = 120104320
Thus, we can understand that the LCM of 560,640,646,664 is 120104320.
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FAQs on LCM of 560, 640, 646, 664
1. What is the LCM of 560, 640, 646, 664?
Answer: LCM of 560, 640, 646, 664 is 120104320.
2. How to calculate the LCM of 560, 640, 646, 664?
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 560, 640, 646, 664.
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}.