LCM of 765, 391, 785, 807
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 765, 391, 785, 807 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 765, 391, 785, 807. So, keep reading to learn more.
Given numbers are 765,391,785,807
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 765,391,785,807 is 743089635.
Find LCM of 765,391,785,807 with Prime Factorization
| 3 | 765, 391, 785, 807 |
| 5 | 255, 391, 785, 269 |
| 17 | 51, 391, 157, 269 |
| 3, 23, 157, 269 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 17 x 3 x 23 x 157 x 269 = 743089635
Therefore, the lowest common multiple of 765,391,785,807 is 743089635.
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.
765 x 391 x 785 x 807 = 189487856925
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.
765 : 1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765
391 : 1, 17, 23, 391
785 : 1, 5, 157, 785
807 : 1, 3, 269, 807
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 765,391,785,807, is 1.
Now, the common factors can be found like this.
765:3x 3x 5x 17
391:17x 23
785:5x 157
807:3x 269
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 17 = 255
Therefore, the value for common factors is 255.
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 = 189487856925/(1x255)
LCM = 189487856925/255
LCM = 743089635
Thus, we can understand that the LCM of 765,391,785,807 is 743089635.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 765, 391, 785, 807
1. What is the LCM of 765, 391, 785, 807?
Answer: LCM of 765, 391, 785, 807 is 743089635.
2. How to calculate the LCM of 765, 391, 785, 807?
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 765, 391, 785, 807.
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}.