LCM of 298, 821, 640, 105, 428
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 298, 821, 640, 105, 428 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 298, 821, 640, 105, 428. So, keep reading to learn more.
Given numbers are 298,821,640,105,428
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 298,821,640,105,428 is 175918888320.
Find LCM of 298,821,640,105,428 with Prime Factorization
| 2 | 298, 821, 640, 105, 428 |
| 2 | 149, 821, 320, 105, 214 |
| 5 | 149, 821, 160, 105, 107 |
| 149, 821, 32, 21, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 149 x 821 x 32 x 21 x 107 = 175918888320
Therefore, the lowest common multiple of 298,821,640,105,428 is 175918888320.
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.
298 x 821 x 640 x 105 x 428 = 7036755532800
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.
298 : 1, 2, 149, 298
821 : 1, 821
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
105 : 1, 3, 5, 7, 15, 21, 35, 105
428 : 1, 2, 4, 107, 214, 428
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 298,821,640,105,428, is 1.
Now, the common factors can be found like this.
298:2x 149
821:821
640:2x 2x 2x 2x 2x 2x 2x 5
105:3x 5x 7
428:2x 2x 107
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 2x 5 = 40
Therefore, the value for common factors is 40.
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 = 7036755532800/(1x40)
LCM = 7036755532800/40
LCM = 175918888320
Thus, we can understand that the LCM of 298,821,640,105,428 is 175918888320.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 298, 821, 640, 105, 428
1. What is the LCM of 298, 821, 640, 105, 428?
Answer: LCM of 298, 821, 640, 105, 428 is 175918888320.
2. How to calculate the LCM of 298, 821, 640, 105, 428?
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 298, 821, 640, 105, 428.
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}.