LCM of 781, 704, 869, 136
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 704, 869, 136 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, 704, 869, 136. So, keep reading to learn more.
Given numbers are 781,704,869,136
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,704,869,136 is 67128512.
Find LCM of 781,704,869,136 with Prime Factorization
| 2 | 781, 704, 869, 136 |
| 2 | 781, 352, 869, 68 |
| 2 | 781, 176, 869, 34 |
| 11 | 781, 88, 869, 17 |
| 71, 8, 79, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 11 x 71 x 8 x 79 x 17 = 67128512
Therefore, the lowest common multiple of 781,704,869,136 is 67128512.
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 704 x 869 x 136 = 64980399616
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
704 : 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704
869 : 1, 11, 79, 869
136 : 1, 2, 4, 8, 17, 34, 68, 136
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,704,869,136, is 1.
Now, the common factors can be found like this.
781:11x 71
704:2x 2x 2x 2x 2x 2x 11
869:11x 79
136:2x 2x 2x 17
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 11x 11 = 968
Therefore, the value for common factors is 968.
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 = 64980399616/(1x968)
LCM = 64980399616/968
LCM = 67128512
Thus, we can understand that the LCM of 781,704,869,136 is 67128512.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 781, 704, 869, 136
1. What is the LCM of 781, 704, 869, 136?
Answer: LCM of 781, 704, 869, 136 is 67128512.
2. How to calculate the LCM of 781, 704, 869, 136?
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, 704, 869, 136.
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}.