LCM of 385, 621, 753, 690
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 385, 621, 753, 690 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 385, 621, 753, 690. So, keep reading to learn more.
Given numbers are 385,621,753,690
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 385,621,753,690 is 120020670.
Find LCM of 385,621,753,690 with Prime Factorization
| 3 | 385, 621, 753, 690 |
| 5 | 385, 207, 251, 230 |
| 23 | 77, 207, 251, 46 |
| 77, 9, 251, 2 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 23 x 77 x 9 x 251 x 2 = 120020670
Therefore, the lowest common multiple of 385,621,753,690 is 120020670.
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.
385 x 621 x 753 x 690 = 124221393450
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.
385 : 1, 5, 7, 11, 35, 55, 77, 385
621 : 1, 3, 9, 23, 27, 69, 207, 621
753 : 1, 3, 251, 753
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 385,621,753,690, is 1.
Now, the common factors can be found like this.
385:5x 7x 11
621:3x 3x 3x 23
753:3x 251
690:2x 3x 5x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5x 23 = 1035
Therefore, the value for common factors is 1035.
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 = 124221393450/(1x1035)
LCM = 124221393450/1035
LCM = 120020670
Thus, we can understand that the LCM of 385,621,753,690 is 120020670.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 385, 621, 753, 690
1. What is the LCM of 385, 621, 753, 690?
Answer: LCM of 385, 621, 753, 690 is 120020670.
2. How to calculate the LCM of 385, 621, 753, 690?
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 385, 621, 753, 690.
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}.