LCM of 639, 988, 324, 681
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 639, 988, 324, 681 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 639, 988, 324, 681. So, keep reading to learn more.
Given numbers are 639,988,324,681
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 639,988,324,681 is 1289811276.
Find LCM of 639,988,324,681 with Prime Factorization
| 2 | 639, 988, 324, 681 |
| 2 | 639, 494, 162, 681 |
| 3 | 639, 247, 81, 681 |
| 3 | 213, 247, 27, 227 |
| 71, 247, 9, 227 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 71 x 247 x 9 x 227 = 1289811276
Therefore, the lowest common multiple of 639,988,324,681 is 1289811276.
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.
639 x 988 x 324 x 681 = 139299617808
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.
639 : 1, 3, 9, 71, 213, 639
988 : 1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988
324 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324
681 : 1, 3, 227, 681
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,988,324,681, is 1.
Now, the common factors can be found like this.
639:3x 3x 71
988:2x 2x 13x 19
324:2x 2x 3x 3x 3x 3
681:3x 227
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 3x 3x 3 = 108
Therefore, the value for common factors is 108.
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 = 139299617808/(1x108)
LCM = 139299617808/108
LCM = 1289811276
Thus, we can understand that the LCM of 639,988,324,681 is 1289811276.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 639, 988, 324, 681
1. What is the LCM of 639, 988, 324, 681?
Answer: LCM of 639, 988, 324, 681 is 1289811276.
2. How to calculate the LCM of 639, 988, 324, 681?
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 639, 988, 324, 681.
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}.