LCM of 639, 781, 441, 198
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 639, 781, 441, 198 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 639, 781, 441, 198. So, keep reading to learn more.
Given numbers are 639,781,441,198
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 639,781,441,198 is 688842.
Find LCM of 639,781,441,198 with Prime Factorization
| 3 | 639, 781, 441, 198 |
| 3 | 213, 781, 147, 66 |
| 11 | 71, 781, 49, 22 |
| 71 | 71, 71, 49, 2 |
| 1, 1, 49, 2 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 11 x 71 x 1 x 1 x 49 x 2 = 688842
Therefore, the lowest common multiple of 639,781,441,198 is 688842.
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.
639 x 781 x 441 x 198 = 43576833762
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.
639 : 1, 3, 9, 71, 213, 639
781 : 1, 11, 71, 781
441 : 1, 3, 7, 9, 21, 49, 63, 147, 441
198 : 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,781,441,198, is 1.
Now, the common factors can be found like this.
639:3x 3x 71
781:11x 71
441:3x 3x 7x 7
198:2x 3x 3x 11
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 3x 3x 11x 71 = 63261
Therefore, the value for common factors is 63261.
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 = 43576833762/(1x63261)
LCM = 43576833762/63261
LCM = 688842
Thus, we can understand that the LCM of 639,781,441,198 is 688842.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 639, 781, 441, 198
1. What is the LCM of 639, 781, 441, 198?
Answer: LCM of 639, 781, 441, 198 is 688842.
2. How to calculate the LCM of 639, 781, 441, 198?
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 639, 781, 441, 198.
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}.