LCM of 343, 689, 972, 220
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 343, 689, 972, 220 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 343, 689, 972, 220. So, keep reading to learn more.
Given numbers are 343,689,972,220
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 343,689,972,220 is 12634041420.
Find LCM of 343,689,972,220 with Prime Factorization
| 2 | 343, 689, 972, 220 |
| 2 | 343, 689, 486, 110 |
| 343, 689, 243, 55 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 343 x 689 x 243 x 55 = 12634041420
Therefore, the lowest common multiple of 343,689,972,220 is 12634041420.
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.
343 x 689 x 972 x 220 = 50536165680
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.
343 : 1, 7, 49, 343
689 : 1, 13, 53, 689
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
220 : 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 343,689,972,220, is 1.
Now, the common factors can be found like this.
343:7x 7x 7
689:13x 53
972:2x 2x 3x 3x 3x 3x 3
220:2x 2x 5x 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 2 = 4
Therefore, the value for common factors is 4.
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 = 50536165680/(1x4)
LCM = 50536165680/4
LCM = 12634041420
Thus, we can understand that the LCM of 343,689,972,220 is 12634041420.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 343, 689, 972, 220
1. What is the LCM of 343, 689, 972, 220?
Answer: LCM of 343, 689, 972, 220 is 12634041420.
2. How to calculate the LCM of 343, 689, 972, 220?
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 343, 689, 972, 220.
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}.