LCM of 605, 638, 576, 781
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 605, 638, 576, 781 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 605, 638, 576, 781. So, keep reading to learn more.
Given numbers are 605,638,576,781
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 605,638,576,781 is 717520320.
Find LCM of 605,638,576,781 with Prime Factorization
| 2 | 605, 638, 576, 781 |
| 11 | 605, 319, 288, 781 |
| 55, 29, 288, 71 |
Multiply the prime numbers at the bottom and the left side.
2 x 11 x 55 x 29 x 288 x 71 = 717520320
Therefore, the lowest common multiple of 605,638,576,781 is 717520320.
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.
605 x 638 x 576 x 781 = 173639917440
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.
605 : 1, 5, 11, 55, 121, 605
638 : 1, 2, 11, 22, 29, 58, 319, 638
576 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 144, 192, 288, 576
781 : 1, 11, 71, 781
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 605,638,576,781, is 1.
Now, the common factors can be found like this.
605:5x 11x 11
638:2x 11x 29
576:2x 2x 2x 2x 2x 2x 3x 3
781:11x 71
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 11x 11 = 242
Therefore, the value for common factors is 242.
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 = 173639917440/(1x242)
LCM = 173639917440/242
LCM = 717520320
Thus, we can understand that the LCM of 605,638,576,781 is 717520320.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 605, 638, 576, 781
1. What is the LCM of 605, 638, 576, 781?
Answer: LCM of 605, 638, 576, 781 is 717520320.
2. How to calculate the LCM of 605, 638, 576, 781?
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 605, 638, 576, 781.
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}.