LCM of 249, 160, 915, 690, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 249, 160, 915, 690, 840 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 249, 160, 915, 690, 840. So, keep reading to learn more.
Given numbers are 249,160,915,690,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 249,160,915,690,840 is 391268640.
Find LCM of 249,160,915,690,840 with Prime Factorization
| 2 | 249, 160, 915, 690, 840 |
| 2 | 249, 80, 915, 345, 420 |
| 2 | 249, 40, 915, 345, 210 |
| 3 | 249, 20, 915, 345, 105 |
| 5 | 83, 20, 305, 115, 35 |
| 83, 4, 61, 23, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 83 x 4 x 61 x 23 x 7 = 391268640
Therefore, the lowest common multiple of 249,160,915,690,840 is 391268640.
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.
249 x 160 x 915 x 690 x 840 = 21128506560000
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.
249 : 1, 3, 83, 249
160 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160
915 : 1, 3, 5, 15, 61, 183, 305, 915
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 249,160,915,690,840, is 1.
Now, the common factors can be found like this.
249:3x 83
160:2x 2x 2x 2x 2x 5
915:3x 5x 61
690:2x 3x 5x 23
840:2x 2x 2x 3x 5x 7
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 2x 3x 3x 3x 5x 5x 5 = 54000
Therefore, the value for common factors is 54000.
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 = 21128506560000/(1x54000)
LCM = 21128506560000/54000
LCM = 391268640
Thus, we can understand that the LCM of 249,160,915,690,840 is 391268640.
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FAQs on LCM of 249, 160, 915, 690, 840
1. What is the LCM of 249, 160, 915, 690, 840?
Answer: LCM of 249, 160, 915, 690, 840 is 391268640.
2. How to calculate the LCM of 249, 160, 915, 690, 840?
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 249, 160, 915, 690, 840.
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}.