LCM of 240, 643, 680, 620
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 240, 643, 680, 620 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 240, 643, 680, 620. So, keep reading to learn more.
Given numbers are 240,643,680,620
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 240,643,680,620 is 81326640.
Find LCM of 240,643,680,620 with Prime Factorization
| 2 | 240, 643, 680, 620 |
| 2 | 120, 643, 340, 310 |
| 2 | 60, 643, 170, 155 |
| 5 | 30, 643, 85, 155 |
| 6, 643, 17, 31 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 6 x 643 x 17 x 31 = 81326640
Therefore, the lowest common multiple of 240,643,680,620 is 81326640.
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.
240 x 643 x 680 x 620 = 65061312000
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.
240 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240
643 : 1, 643
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 240,643,680,620, is 1.
Now, the common factors can be found like this.
240:2x 2x 2x 2x 3x 5
643:643
680:2x 2x 2x 5x 17
620:2x 2x 5x 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 2x 2x 2x 5x 5 = 800
Therefore, the value for common factors is 800.
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 = 65061312000/(1x800)
LCM = 65061312000/800
LCM = 81326640
Thus, we can understand that the LCM of 240,643,680,620 is 81326640.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 240, 643, 680, 620
1. What is the LCM of 240, 643, 680, 620?
Answer: LCM of 240, 643, 680, 620 is 81326640.
2. How to calculate the LCM of 240, 643, 680, 620?
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 240, 643, 680, 620.
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}.