LCM of 198, 781, 253, 390
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 198, 781, 253, 390 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 198, 781, 253, 390. So, keep reading to learn more.
Given numbers are 198,781,253,390
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 198,781,253,390 is 21016710.
Find LCM of 198,781,253,390 with Prime Factorization
| 2 | 198, 781, 253, 390 |
| 3 | 99, 781, 253, 195 |
| 11 | 33, 781, 253, 65 |
| 3, 71, 23, 65 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 11 x 3 x 71 x 23 x 65 = 21016710
Therefore, the lowest common multiple of 198,781,253,390 is 21016710.
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.
198 x 781 x 253 x 390 = 15258131460
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.
198 : 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198
781 : 1, 11, 71, 781
253 : 1, 11, 23, 253
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 198,781,253,390, is 1.
Now, the common factors can be found like this.
198:2x 3x 3x 11
781:11x 71
253:11x 23
390:2x 3x 5x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 11x 11 = 726
Therefore, the value for common factors is 726.
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 = 15258131460/(1x726)
LCM = 15258131460/726
LCM = 21016710
Thus, we can understand that the LCM of 198,781,253,390 is 21016710.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 198, 781, 253, 390
1. What is the LCM of 198, 781, 253, 390?
Answer: LCM of 198, 781, 253, 390 is 21016710.
2. How to calculate the LCM of 198, 781, 253, 390?
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 198, 781, 253, 390.
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}.