LCM of 643, 865, 646, 980, 570
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 643, 865, 646, 980, 570 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 643, 865, 646, 980, 570. So, keep reading to learn more.
Given numbers are 643,865,646,980,570
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 643,865,646,980,570 is 105634779180.
Find LCM of 643,865,646,980,570 with Prime Factorization
| 2 | 643, 865, 646, 980, 570 |
| 5 | 643, 865, 323, 490, 285 |
| 19 | 643, 173, 323, 98, 57 |
| 643, 173, 17, 98, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 19 x 643 x 173 x 17 x 98 x 3 = 105634779180
Therefore, the lowest common multiple of 643,865,646,980,570 is 105634779180.
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.
643 x 865 x 646 x 980 x 570 = 200706080442000
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.
643 : 1, 643
865 : 1, 5, 173, 865
646 : 1, 2, 17, 19, 34, 38, 323, 646
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
570 : 1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 285, 570
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,865,646,980,570, is 1.
Now, the common factors can be found like this.
643:643
865:5x 173
646:2x 17x 19
980:2x 2x 5x 7x 7
570:2x 3x 5x 19
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 5x 19 = 1900
Therefore, the value for common factors is 1900.
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 = 200706080442000/(1x1900)
LCM = 200706080442000/1900
LCM = 105634779180
Thus, we can understand that the LCM of 643,865,646,980,570 is 105634779180.
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FAQs on LCM of 643, 865, 646, 980, 570
1. What is the LCM of 643, 865, 646, 980, 570?
Answer: LCM of 643, 865, 646, 980, 570 is 105634779180.
2. How to calculate the LCM of 643, 865, 646, 980, 570?
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 643, 865, 646, 980, 570.
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}.