LCM of 872, 861, 692, 870
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 872, 861, 692, 870 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 872, 861, 692, 870. So, keep reading to learn more.
Given numbers are 872,861,692,870
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 872,861,692,870 is 18833617320.
Find LCM of 872,861,692,870 with Prime Factorization
| 2 | 872, 861, 692, 870 |
| 2 | 436, 861, 346, 435 |
| 3 | 218, 861, 173, 435 |
| 218, 287, 173, 145 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 218 x 287 x 173 x 145 = 18833617320
Therefore, the lowest common multiple of 872,861,692,870 is 18833617320.
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.
872 x 861 x 692 x 870 = 452006815680
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.
872 : 1, 2, 4, 8, 109, 218, 436, 872
861 : 1, 3, 7, 21, 41, 123, 287, 861
692 : 1, 2, 4, 173, 346, 692
870 : 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 872,861,692,870, is 1.
Now, the common factors can be found like this.
872:2x 2x 2x 109
861:3x 7x 41
692:2x 2x 173
870:2x 3x 5x 29
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 2x 3 = 24
Therefore, the value for common factors is 24.
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 = 452006815680/(1x24)
LCM = 452006815680/24
LCM = 18833617320
Thus, we can understand that the LCM of 872,861,692,870 is 18833617320.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 872, 861, 692, 870
1. What is the LCM of 872, 861, 692, 870?
Answer: LCM of 872, 861, 692, 870 is 18833617320.
2. How to calculate the LCM of 872, 861, 692, 870?
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 872, 861, 692, 870.
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}.