LCM of 620, 153, 391, 765
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 620, 153, 391, 765 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 620, 153, 391, 765. So, keep reading to learn more.
Given numbers are 620,153,391,765
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 620,153,391,765 is 2181780.
Find LCM of 620,153,391,765 with Prime Factorization
| 3 | 620, 153, 391, 765 |
| 3 | 620, 51, 391, 255 |
| 5 | 620, 17, 391, 85 |
| 17 | 124, 17, 391, 17 |
| 124, 1, 23, 1 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 5 x 17 x 124 x 1 x 23 x 1 = 2181780
Therefore, the lowest common multiple of 620,153,391,765 is 2181780.
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.
620 x 153 x 391 x 765 = 28374048900
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.
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
153 : 1, 3, 9, 17, 51, 153
391 : 1, 17, 23, 391
765 : 1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 620,153,391,765, is 1.
Now, the common factors can be found like this.
620:2x 2x 5x 31
153:3x 3x 17
391:17x 23
765:3x 3x 5x 17
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 5x 17x 17 = 13005
Therefore, the value for common factors is 13005.
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 = 28374048900/(1x13005)
LCM = 28374048900/13005
LCM = 2181780
Thus, we can understand that the LCM of 620,153,391,765 is 2181780.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 620, 153, 391, 765
1. What is the LCM of 620, 153, 391, 765?
Answer: LCM of 620, 153, 391, 765 is 2181780.
2. How to calculate the LCM of 620, 153, 391, 765?
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 620, 153, 391, 765.
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}.