LCM of 781, 748, 176, 989
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 748, 176, 989 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, 748, 176, 989. So, keep reading to learn more.
Given numbers are 781,748,176,989
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,748,176,989 is 210095248.
Find LCM of 781,748,176,989 with Prime Factorization
| 2 | 781, 748, 176, 989 |
| 2 | 781, 374, 88, 989 |
| 11 | 781, 187, 44, 989 |
| 71, 17, 4, 989 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 11 x 71 x 17 x 4 x 989 = 210095248
Therefore, the lowest common multiple of 781,748,176,989 is 210095248.
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 748 x 176 x 989 = 101686100032
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
748 : 1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748
176 : 1, 2, 4, 8, 11, 16, 22, 44, 88, 176
989 : 1, 23, 43, 989
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,748,176,989, is 1.
Now, the common factors can be found like this.
781:11x 71
748:2x 2x 11x 17
176:2x 2x 2x 2x 11
989:23x 43
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 11x 11 = 484
Therefore, the value for common factors is 484.
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 = 101686100032/(1x484)
LCM = 101686100032/484
LCM = 210095248
Thus, we can understand that the LCM of 781,748,176,989 is 210095248.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 781, 748, 176, 989
1. What is the LCM of 781, 748, 176, 989?
Answer: LCM of 781, 748, 176, 989 is 210095248.
2. How to calculate the LCM of 781, 748, 176, 989?
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, 748, 176, 989.
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}.