LCM of 742, 210, 779, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 742, 210, 779, 646 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 742, 210, 779, 646. So, keep reading to learn more.
Given numbers are 742,210,779,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 742,210,779,646 is 147394590.
Find LCM of 742,210,779,646 with Prime Factorization
| 2 | 742, 210, 779, 646 |
| 7 | 371, 105, 779, 323 |
| 19 | 53, 15, 779, 323 |
| 53, 15, 41, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 19 x 53 x 15 x 41 x 17 = 147394590
Therefore, the lowest common multiple of 742,210,779,646 is 147394590.
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.
742 x 210 x 779 x 646 = 78413921880
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.
742 : 1, 2, 7, 14, 53, 106, 371, 742
210 : 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210
779 : 1, 19, 41, 779
646 : 1, 2, 17, 19, 34, 38, 323, 646
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 742,210,779,646, is 1.
Now, the common factors can be found like this.
742:2x 7x 53
210:2x 3x 5x 7
779:19x 41
646:2x 17x 19
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 7x 19 = 532
Therefore, the value for common factors is 532.
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 = 78413921880/(1x532)
LCM = 78413921880/532
LCM = 147394590
Thus, we can understand that the LCM of 742,210,779,646 is 147394590.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 742, 210, 779, 646
1. What is the LCM of 742, 210, 779, 646?
Answer: LCM of 742, 210, 779, 646 is 147394590.
2. How to calculate the LCM of 742, 210, 779, 646?
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 742, 210, 779, 646.
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}.