LCM of 403, 398, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 403, 398, 646 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 403, 398, 646. So, keep reading to learn more.
Given numbers are 403,398,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 403,398,646 is 51807262.
Find LCM of 403,398,646 with Prime Factorization
| 2 | 403, 398, 646 |
| 403, 199, 323 |
Multiply the prime numbers at the bottom and the left side.
2 x 403 x 199 x 323 = 51807262
Therefore, the lowest common multiple of 403,398,646 is 51807262.
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.
403 x 398 x 646 = 103614524
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.
403 : 1, 13, 31, 403
398 : 1, 2, 199, 398
646 : 1, 2, 17, 19, 34, 38, 323, 646
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 403,398,646, is 1.
Now, the common factors can be found like this.
403:13x 31
398:2x 199
646:2x 17x 19
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2 = 2
Therefore, the value for common factors is 2.
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 = 103614524/(1x2)
LCM = 103614524/2
LCM = 51807262
Thus, we can understand that the LCM of 403,398,646 is 51807262.
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FAQs on LCM of 403, 398, 646
1. What is the LCM of 403, 398, 646?
Answer: LCM of 403, 398, 646 is 51807262.
2. How to calculate the LCM of 403, 398, 646?
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 403, 398, 646.
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}.