LCM of 663, 781, 561, 620, 215
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 663, 781, 561, 620, 215 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 663, 781, 561, 620, 215. So, keep reading to learn more.
Given numbers are 663,781,561,620,215
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 663,781,561,620,215 is 13804627980.
Find LCM of 663,781,561,620,215 with Prime Factorization
| 3 | 663, 781, 561, 620, 215 |
| 5 | 221, 781, 187, 620, 215 |
| 11 | 221, 781, 187, 124, 43 |
| 17 | 221, 71, 17, 124, 43 |
| 13, 71, 1, 124, 43 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 11 x 17 x 13 x 71 x 1 x 124 x 43 = 13804627980
Therefore, the lowest common multiple of 663,781,561,620,215 is 13804627980.
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.
663 x 781 x 561 x 620 x 215 = 38721981483900
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.
663 : 1, 3, 13, 17, 39, 51, 221, 663
781 : 1, 11, 71, 781
561 : 1, 3, 11, 17, 33, 51, 187, 561
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
215 : 1, 5, 43, 215
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 663,781,561,620,215, is 1.
Now, the common factors can be found like this.
663:3x 13x 17
781:11x 71
561:3x 11x 17
620:2x 2x 5x 31
215:5x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 11x 17 = 2805
Therefore, the value for common factors is 2805.
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 = 38721981483900/(1x2805)
LCM = 38721981483900/2805
LCM = 13804627980
Thus, we can understand that the LCM of 663,781,561,620,215 is 13804627980.
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FAQs on LCM of 663, 781, 561, 620, 215
1. What is the LCM of 663, 781, 561, 620, 215?
Answer: LCM of 663, 781, 561, 620, 215 is 13804627980.
2. How to calculate the LCM of 663, 781, 561, 620, 215?
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 663, 781, 561, 620, 215.
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}.