LCM of 728, 802, 138, 581
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 728, 802, 138, 581 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 728, 802, 138, 581. So, keep reading to learn more.
Given numbers are 728,802,138,581
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 728,802,138,581 is 1671871656.
Find LCM of 728,802,138,581 with Prime Factorization
| 2 | 728, 802, 138, 581 |
| 7 | 364, 401, 69, 581 |
| 52, 401, 69, 83 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 52 x 401 x 69 x 83 = 1671871656
Therefore, the lowest common multiple of 728,802,138,581 is 1671871656.
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.
728 x 802 x 138 x 581 = 46812406368
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.
728 : 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
802 : 1, 2, 401, 802
138 : 1, 2, 3, 6, 23, 46, 69, 138
581 : 1, 7, 83, 581
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 728,802,138,581, is 1.
Now, the common factors can be found like this.
728:2x 2x 2x 7x 13
802:2x 401
138:2x 3x 23
581:7x 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 2x 7 = 28
Therefore, the value for common factors is 28.
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 = 46812406368/(1x28)
LCM = 46812406368/28
LCM = 1671871656
Thus, we can understand that the LCM of 728,802,138,581 is 1671871656.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 728, 802, 138, 581
1. What is the LCM of 728, 802, 138, 581?
Answer: LCM of 728, 802, 138, 581 is 1671871656.
2. How to calculate the LCM of 728, 802, 138, 581?
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 728, 802, 138, 581.
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}.