LCM of 862, 840, 644, 678
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 862, 840, 644, 678 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 862, 840, 644, 678. So, keep reading to learn more.
Given numbers are 862,840,644,678
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 862,840,644,678 is 940941960.
Find LCM of 862,840,644,678 with Prime Factorization
| 2 | 862, 840, 644, 678 |
| 2 | 431, 420, 322, 339 |
| 3 | 431, 210, 161, 339 |
| 7 | 431, 70, 161, 113 |
| 431, 10, 23, 113 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 7 x 431 x 10 x 23 x 113 = 940941960
Therefore, the lowest common multiple of 862,840,644,678 is 940941960.
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.
862 x 840 x 644 x 678 = 316156498560
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.
862 : 1, 2, 431, 862
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
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
678 : 1, 2, 3, 6, 113, 226, 339, 678
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 862,840,644,678, is 2.
Now, the common factors can be found like this.
862:2x 431
840:2x 2x 2x 3x 5x 7
644:2x 2x 7x 23
678:2x 3x 113
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 3x 7 = 168
Therefore, the value for common factors is 168.
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 = 316156498560/(2x168)
LCM = 316156498560/336
LCM = 940941960
Thus, we can understand that the LCM of 862,840,644,678 is 940941960.
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FAQs on LCM of 862, 840, 644, 678
1. What is the LCM of 862, 840, 644, 678?
Answer: LCM of 862, 840, 644, 678 is 940941960.
2. How to calculate the LCM of 862, 840, 644, 678?
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 862, 840, 644, 678.
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}.