LCM of 420, 561, 918, 763, 249
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 420, 561, 918, 763, 249 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 420, 561, 918, 763, 249. So, keep reading to learn more.
Given numbers are 420,561,918,763,249
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 420,561,918,763,249 is 6394962420.
Find LCM of 420,561,918,763,249 with Prime Factorization
| 2 | 420, 561, 918, 763, 249 |
| 3 | 210, 561, 459, 763, 249 |
| 7 | 70, 187, 153, 763, 83 |
| 17 | 10, 187, 153, 109, 83 |
| 10, 11, 9, 109, 83 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 7 x 17 x 10 x 11 x 9 x 109 x 83 = 6394962420
Therefore, the lowest common multiple of 420,561,918,763,249 is 6394962420.
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.
420 x 561 x 918 x 763 x 249 = 41094028510920
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.
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
561 : 1, 3, 11, 17, 33, 51, 187, 561
918 : 1, 2, 3, 6, 9, 17, 18, 27, 34, 51, 54, 102, 153, 306, 459, 918
763 : 1, 7, 109, 763
249 : 1, 3, 83, 249
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 420,561,918,763,249, is 1.
Now, the common factors can be found like this.
420:2x 2x 3x 5x 7
561:3x 11x 17
918:2x 3x 3x 3x 17
763:7x 109
249:3x 83
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3x 3x 7x 17 = 6426
Therefore, the value for common factors is 6426.
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 = 41094028510920/(1x6426)
LCM = 41094028510920/6426
LCM = 6394962420
Thus, we can understand that the LCM of 420,561,918,763,249 is 6394962420.
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FAQs on LCM of 420, 561, 918, 763, 249
1. What is the LCM of 420, 561, 918, 763, 249?
Answer: LCM of 420, 561, 918, 763, 249 is 6394962420.
2. How to calculate the LCM of 420, 561, 918, 763, 249?
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 420, 561, 918, 763, 249.
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}.