LCM of 180, 639, 120, 661
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 180, 639, 120, 661 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 180, 639, 120, 661. So, keep reading to learn more.
Given numbers are 180,639,120,661
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 180,639,120,661 is 16895160.
Find LCM of 180,639,120,661 with Prime Factorization
| 2 | 180, 639, 120, 661 |
| 2 | 90, 639, 60, 661 |
| 3 | 45, 639, 30, 661 |
| 3 | 15, 213, 10, 661 |
| 5 | 5, 71, 10, 661 |
| 1, 71, 2, 661 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 5 x 1 x 71 x 2 x 661 = 16895160
Therefore, the lowest common multiple of 180,639,120,661 is 16895160.
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.
180 x 639 x 120 x 661 = 9123386400
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.
180 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180
639 : 1, 3, 9, 71, 213, 639
120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
661 : 1, 661
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 180,639,120,661, is 1.
Now, the common factors can be found like this.
180:2x 2x 3x 3x 5
639:3x 3x 71
120:2x 2x 2x 3x 5
661:661
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 3x 3x 3x 5 = 540
Therefore, the value for common factors is 540.
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 = 9123386400/(1x540)
LCM = 9123386400/540
LCM = 16895160
Thus, we can understand that the LCM of 180,639,120,661 is 16895160.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 180, 639, 120, 661
1. What is the LCM of 180, 639, 120, 661?
Answer: LCM of 180, 639, 120, 661 is 16895160.
2. How to calculate the LCM of 180, 639, 120, 661?
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 180, 639, 120, 661.
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}.