LCM of 987, 398, 816, 156
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 987, 398, 816, 156 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 987, 398, 816, 156. So, keep reading to learn more.
Given numbers are 987,398,816,156
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 987,398,816,156 is 694516368.
Find LCM of 987,398,816,156 with Prime Factorization
| 2 | 987, 398, 816, 156 |
| 2 | 987, 199, 408, 78 |
| 3 | 987, 199, 204, 39 |
| 329, 199, 68, 13 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 329 x 199 x 68 x 13 = 694516368
Therefore, the lowest common multiple of 987,398,816,156 is 694516368.
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.
987 x 398 x 816 x 156 = 50005178496
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.
987 : 1, 3, 7, 21, 47, 141, 329, 987
398 : 1, 2, 199, 398
816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
156 : 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 987,398,816,156, is 1.
Now, the common factors can be found like this.
987:3x 7x 47
398:2x 199
816:2x 2x 2x 2x 3x 17
156:2x 2x 3x 13
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 3 = 72
Therefore, the value for common factors is 72.
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 = 50005178496/(1x72)
LCM = 50005178496/72
LCM = 694516368
Thus, we can understand that the LCM of 987,398,816,156 is 694516368.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 987, 398, 816, 156
1. What is the LCM of 987, 398, 816, 156?
Answer: LCM of 987, 398, 816, 156 is 694516368.
2. How to calculate the LCM of 987, 398, 816, 156?
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 987, 398, 816, 156.
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}.