LCM of 551, 781, 605, 990
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 551, 781, 605, 990 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 551, 781, 605, 990. So, keep reading to learn more.
Given numbers are 551,781,605,990
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 551,781,605,990 is 426027690.
Find LCM of 551,781,605,990 with Prime Factorization
| 5 | 551, 781, 605, 990 |
| 11 | 551, 781, 121, 198 |
| 551, 71, 11, 18 |
Multiply the prime numbers at the bottom and the left side.
5 x 11 x 551 x 71 x 11 x 18 = 426027690
Therefore, the lowest common multiple of 551,781,605,990 is 426027690.
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.
551 x 781 x 605 x 990 = 257746752450
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.
551 : 1, 19, 29, 551
781 : 1, 11, 71, 781
605 : 1, 5, 11, 55, 121, 605
990 : 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 551,781,605,990, is 1.
Now, the common factors can be found like this.
551:19x 29
781:11x 71
605:5x 11x 11
990:2x 3x 3x 5x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
5x 11x 11 = 605
Therefore, the value for common factors is 605.
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 = 257746752450/(1x605)
LCM = 257746752450/605
LCM = 426027690
Thus, we can understand that the LCM of 551,781,605,990 is 426027690.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 551, 781, 605, 990
1. What is the LCM of 551, 781, 605, 990?
Answer: LCM of 551, 781, 605, 990 is 426027690.
2. How to calculate the LCM of 551, 781, 605, 990?
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 551, 781, 605, 990.
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}.