LCM of 742, 128, 770, 682
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 742, 128, 770, 682 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, 128, 770, 682. So, keep reading to learn more.
Given numbers are 742,128,770,682
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 742,128,770,682 is 80967040.
Find LCM of 742,128,770,682 with Prime Factorization
| 2 | 742, 128, 770, 682 |
| 7 | 371, 64, 385, 341 |
| 11 | 53, 64, 55, 341 |
| 53, 64, 5, 31 |
Multiply the prime numbers at the bottom and the left side.
2 x 7 x 11 x 53 x 64 x 5 x 31 = 80967040
Therefore, the lowest common multiple of 742,128,770,682 is 80967040.
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 128 x 770 x 682 = 49875696640
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
128 : 1, 2, 4, 8, 16, 32, 64, 128
770 : 1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770
682 : 1, 2, 11, 22, 31, 62, 341, 682
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 742,128,770,682, is 2.
Now, the common factors can be found like this.
742:2x 7x 53
128:2x 2x 2x 2x 2x 2x 2
770:2x 5x 7x 11
682:2x 11x 31
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 11 = 308
Therefore, the value for common factors is 308.
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 = 49875696640/(2x308)
LCM = 49875696640/616
LCM = 80967040
Thus, we can understand that the LCM of 742,128,770,682 is 80967040.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 742, 128, 770, 682
1. What is the LCM of 742, 128, 770, 682?
Answer: LCM of 742, 128, 770, 682 is 80967040.
2. How to calculate the LCM of 742, 128, 770, 682?
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, 128, 770, 682.
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}.