LCM of 643, 352, 685, 704
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 643, 352, 685, 704 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, 352, 685, 704. So, keep reading to learn more.
Given numbers are 643,352,685,704
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 643,352,685,704 is 310080320.
Find LCM of 643,352,685,704 with Prime Factorization
| 2 | 643, 352, 685, 704 |
| 2 | 643, 176, 685, 352 |
| 2 | 643, 88, 685, 176 |
| 2 | 643, 44, 685, 88 |
| 2 | 643, 22, 685, 44 |
| 11 | 643, 11, 685, 22 |
| 643, 1, 685, 2 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 2 x 11 x 643 x 1 x 685 x 2 = 310080320
Therefore, the lowest common multiple of 643,352,685,704 is 310080320.
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 352 x 685 x 704 = 109148272640
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
352 : 1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 352
685 : 1, 5, 137, 685
704 : 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,352,685,704, is 1.
Now, the common factors can be found like this.
643:643
352:2x 2x 2x 2x 2x 11
685:5x 137
704:2x 2x 2x 2x 2x 2x 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 2x 2x 2x 11 = 352
Therefore, the value for common factors is 352.
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 = 109148272640/(1x352)
LCM = 109148272640/352
LCM = 310080320
Thus, we can understand that the LCM of 643,352,685,704 is 310080320.
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FAQs on LCM of 643, 352, 685, 704
1. What is the LCM of 643, 352, 685, 704?
Answer: LCM of 643, 352, 685, 704 is 310080320.
2. How to calculate the LCM of 643, 352, 685, 704?
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, 352, 685, 704.
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}.