LCM of 667, 781, 798, 728
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 667, 781, 798, 728 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 667, 781, 798, 728. So, keep reading to learn more.
Given numbers are 667,781,798,728
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 667,781,798,728 is 21616386792.
Find LCM of 667,781,798,728 with Prime Factorization
| 2 | 667, 781, 798, 728 |
| 7 | 667, 781, 399, 364 |
| 667, 781, 57, 52 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 667 x 781 x 57 x 52 = 21616386792
Therefore, the lowest common multiple of 667,781,798,728 is 21616386792.
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.
667 x 781 x 798 x 728 = 302629415088
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.
667 : 1, 23, 29, 667
781 : 1, 11, 71, 781
798 : 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 667,781,798,728, is 1.
Now, the common factors can be found like this.
667:23x 29
781:11x 71
798:2x 3x 7x 19
728:2x 2x 2x 7x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 7 = 14
Therefore, the value for common factors is 14.
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 = 302629415088/(1x14)
LCM = 302629415088/14
LCM = 21616386792
Thus, we can understand that the LCM of 667,781,798,728 is 21616386792.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 667, 781, 798, 728
1. What is the LCM of 667, 781, 798, 728?
Answer: LCM of 667, 781, 798, 728 is 21616386792.
2. How to calculate the LCM of 667, 781, 798, 728?
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 667, 781, 798, 728.
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}.