LCM of 128, 986, 299, 749, 780
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 128, 986, 299, 749, 780 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 128, 986, 299, 749, 780. So, keep reading to learn more.
Given numbers are 128,986,299,749,780
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 128,986,299,749,780 is 211983058560.
Find LCM of 128,986,299,749,780 with Prime Factorization
| 2 | 128, 986, 299, 749, 780 |
| 2 | 64, 493, 299, 749, 390 |
| 13 | 32, 493, 299, 749, 195 |
| 32, 493, 23, 749, 15 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 13 x 32 x 493 x 23 x 749 x 15 = 211983058560
Therefore, the lowest common multiple of 128,986,299,749,780 is 211983058560.
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.
128 x 986 x 299 x 749 x 780 = 22046238090240
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.
128 : 1, 2, 4, 8, 16, 32, 64, 128
986 : 1, 2, 17, 29, 34, 58, 493, 986
299 : 1, 13, 23, 299
749 : 1, 7, 107, 749
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 128,986,299,749,780, is 1.
Now, the common factors can be found like this.
128:2x 2x 2x 2x 2x 2x 2
986:2x 17x 29
299:13x 23
749:7x 107
780:2x 2x 3x 5x 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 2x 2x 13 = 104
Therefore, the value for common factors is 104.
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 = 22046238090240/(1x104)
LCM = 22046238090240/104
LCM = 211983058560
Thus, we can understand that the LCM of 128,986,299,749,780 is 211983058560.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 128, 986, 299, 749, 780
1. What is the LCM of 128, 986, 299, 749, 780?
Answer: LCM of 128, 986, 299, 749, 780 is 211983058560.
2. How to calculate the LCM of 128, 986, 299, 749, 780?
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 128, 986, 299, 749, 780.
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}.