LCM of 781, 152, 686, 852
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 152, 686, 852 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 781, 152, 686, 852. So, keep reading to learn more.
Given numbers are 781,152,686,852
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,152,686,852 is 122154648.
Find LCM of 781,152,686,852 with Prime Factorization
| 2 | 781, 152, 686, 852 |
| 2 | 781, 76, 343, 426 |
| 71 | 781, 38, 343, 213 |
| 11, 38, 343, 3 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 71 x 11 x 38 x 343 x 3 = 122154648
Therefore, the lowest common multiple of 781,152,686,852 is 122154648.
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.
781 x 152 x 686 x 852 = 69383840064
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.
781 : 1, 11, 71, 781
152 : 1, 2, 4, 8, 19, 38, 76, 152
686 : 1, 2, 7, 14, 49, 98, 343, 686
852 : 1, 2, 3, 4, 6, 12, 71, 142, 213, 284, 426, 852
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,152,686,852, is 1.
Now, the common factors can be found like this.
781:11x 71
152:2x 2x 2x 19
686:2x 7x 7x 7
852:2x 2x 3x 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 2x 2x 71 = 568
Therefore, the value for common factors is 568.
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 = 69383840064/(1x568)
LCM = 69383840064/568
LCM = 122154648
Thus, we can understand that the LCM of 781,152,686,852 is 122154648.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 781, 152, 686, 852
1. What is the LCM of 781, 152, 686, 852?
Answer: LCM of 781, 152, 686, 852 is 122154648.
2. How to calculate the LCM of 781, 152, 686, 852?
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 781, 152, 686, 852.
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}.