LCM of 680, 690, 505, 638, 122
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 680, 690, 505, 638, 122 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 680, 690, 505, 638, 122. So, keep reading to learn more.
Given numbers are 680,690,505,638,122
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 680,690,505,638,122 is 92214644280.
Find LCM of 680,690,505,638,122 with Prime Factorization
| 2 | 680, 690, 505, 638, 122 |
| 5 | 340, 345, 505, 319, 61 |
| 68, 69, 101, 319, 61 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 68 x 69 x 101 x 319 x 61 = 92214644280
Therefore, the lowest common multiple of 680,690,505,638,122 is 92214644280.
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.
680 x 690 x 505 x 638 x 122 = 18442928856000
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.
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
505 : 1, 5, 101, 505
638 : 1, 2, 11, 22, 29, 58, 319, 638
122 : 1, 2, 61, 122
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 680,690,505,638,122, is 1.
Now, the common factors can be found like this.
680:2x 2x 2x 5x 17
690:2x 3x 5x 23
505:5x 101
638:2x 11x 29
122:2x 61
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 5x 5 = 200
Therefore, the value for common factors is 200.
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 = 18442928856000/(1x200)
LCM = 18442928856000/200
LCM = 92214644280
Thus, we can understand that the LCM of 680,690,505,638,122 is 92214644280.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 680, 690, 505, 638, 122
1. What is the LCM of 680, 690, 505, 638, 122?
Answer: LCM of 680, 690, 505, 638, 122 is 92214644280.
2. How to calculate the LCM of 680, 690, 505, 638, 122?
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 680, 690, 505, 638, 122.
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}.