LCM of 792, 785, 980, 989
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 792, 785, 980, 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 792, 785, 980, 989. So, keep reading to learn more.
Given numbers are 792,785,980,989
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 792,785,980,989 is 30129172920.
Find LCM of 792,785,980,989 with Prime Factorization
| 2 | 792, 785, 980, 989 |
| 2 | 396, 785, 490, 989 |
| 5 | 198, 785, 245, 989 |
| 198, 157, 49, 989 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 198 x 157 x 49 x 989 = 30129172920
Therefore, the lowest common multiple of 792,785,980,989 is 30129172920.
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.
792 x 785 x 980 x 989 = 602583458400
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.
792 : 1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 66, 72, 88, 99, 132, 198, 264, 396, 792
785 : 1, 5, 157, 785
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
989 : 1, 23, 43, 989
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 792,785,980,989, is 1.
Now, the common factors can be found like this.
792:2x 2x 2x 3x 3x 11
785:5x 157
980:2x 2x 5x 7x 7
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 5 = 20
Therefore, the value for common factors is 20.
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 = 602583458400/(1x20)
LCM = 602583458400/20
LCM = 30129172920
Thus, we can understand that the LCM of 792,785,980,989 is 30129172920.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 792, 785, 980, 989
1. What is the LCM of 792, 785, 980, 989?
Answer: LCM of 792, 785, 980, 989 is 30129172920.
2. How to calculate the LCM of 792, 785, 980, 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 792, 785, 980, 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}.