LCM of 840, 667, 690, 775
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 840, 667, 690, 775 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 840, 667, 690, 775. So, keep reading to learn more.
Given numbers are 840,667,690,775
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 840,667,690,775 is 86843400.
Find LCM of 840,667,690,775 with Prime Factorization
| 2 | 840, 667, 690, 775 |
| 3 | 420, 667, 345, 775 |
| 5 | 140, 667, 115, 775 |
| 23 | 28, 667, 23, 155 |
| 28, 29, 1, 155 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 23 x 28 x 29 x 1 x 155 = 86843400
Therefore, the lowest common multiple of 840,667,690,775 is 86843400.
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.
840 x 667 x 690 x 775 = 299609730000
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.
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
667 : 1, 23, 29, 667
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
775 : 1, 5, 25, 31, 155, 775
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 840,667,690,775, is 1.
Now, the common factors can be found like this.
840:2x 2x 2x 3x 5x 7
667:23x 29
690:2x 3x 5x 23
775:5x 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 3x 5x 5x 23 = 3450
Therefore, the value for common factors is 3450.
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 = 299609730000/(1x3450)
LCM = 299609730000/3450
LCM = 86843400
Thus, we can understand that the LCM of 840,667,690,775 is 86843400.
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FAQs on LCM of 840, 667, 690, 775
1. What is the LCM of 840, 667, 690, 775?
Answer: LCM of 840, 667, 690, 775 is 86843400.
2. How to calculate the LCM of 840, 667, 690, 775?
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 840, 667, 690, 775.
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}.