LCM of 684, 398, 540, 921
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 684, 398, 540, 921 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 684, 398, 540, 921. So, keep reading to learn more.
Given numbers are 684,398,540,921
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 684,398,540,921 is 626814180.
Find LCM of 684,398,540,921 with Prime Factorization
| 2 | 684, 398, 540, 921 |
| 2 | 342, 199, 270, 921 |
| 3 | 171, 199, 135, 921 |
| 3 | 57, 199, 45, 307 |
| 19, 199, 15, 307 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 19 x 199 x 15 x 307 = 626814180
Therefore, the lowest common multiple of 684,398,540,921 is 626814180.
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.
684 x 398 x 540 x 921 = 135391862880
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.
684 : 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
398 : 1, 2, 199, 398
540 : 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540
921 : 1, 3, 307, 921
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 684,398,540,921, is 1.
Now, the common factors can be found like this.
684:2x 2x 3x 3x 19
398:2x 199
540:2x 2x 3x 3x 3x 5
921:3x 307
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 3x 3x 3 = 216
Therefore, the value for common factors is 216.
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 = 135391862880/(1x216)
LCM = 135391862880/216
LCM = 626814180
Thus, we can understand that the LCM of 684,398,540,921 is 626814180.
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FAQs on LCM of 684, 398, 540, 921
1. What is the LCM of 684, 398, 540, 921?
Answer: LCM of 684, 398, 540, 921 is 626814180.
2. How to calculate the LCM of 684, 398, 540, 921?
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 684, 398, 540, 921.
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}.