LCM of 943, 644, 705, 820
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 943, 644, 705, 820 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 943, 644, 705, 820. So, keep reading to learn more.
Given numbers are 943,644,705,820
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 943,644,705,820 is 18614820.
Find LCM of 943,644,705,820 with Prime Factorization
| 2 | 943, 644, 705, 820 |
| 2 | 943, 322, 705, 410 |
| 5 | 943, 161, 705, 205 |
| 23 | 943, 161, 141, 41 |
| 41 | 41, 7, 141, 41 |
| 1, 7, 141, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 23 x 41 x 1 x 7 x 141 x 1 = 18614820
Therefore, the lowest common multiple of 943,644,705,820 is 18614820.
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.
943 x 644 x 705 x 820 = 351075505200
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.
943 : 1, 23, 41, 943
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
705 : 1, 3, 5, 15, 47, 141, 235, 705
820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 943,644,705,820, is 1.
Now, the common factors can be found like this.
943:23x 41
644:2x 2x 7x 23
705:3x 5x 47
820:2x 2x 5x 41
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 23x 41 = 18860
Therefore, the value for common factors is 18860.
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 = 351075505200/(1x18860)
LCM = 351075505200/18860
LCM = 18614820
Thus, we can understand that the LCM of 943,644,705,820 is 18614820.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 943, 644, 705, 820
1. What is the LCM of 943, 644, 705, 820?
Answer: LCM of 943, 644, 705, 820 is 18614820.
2. How to calculate the LCM of 943, 644, 705, 820?
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 943, 644, 705, 820.
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}.