LCM of 398, 124, 947, 128
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 398, 124, 947, 128 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 398, 124, 947, 128. So, keep reading to learn more.
Given numbers are 398,124,947,128
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 398,124,947,128 is 747781504.
Find LCM of 398,124,947,128 with Prime Factorization
| 2 | 398, 124, 947, 128 |
| 2 | 199, 62, 947, 64 |
| 199, 31, 947, 32 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 199 x 31 x 947 x 32 = 747781504
Therefore, the lowest common multiple of 398,124,947,128 is 747781504.
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.
398 x 124 x 947 x 128 = 5982252032
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.
398 : 1, 2, 199, 398
124 : 1, 2, 4, 31, 62, 124
947 : 1, 947
128 : 1, 2, 4, 8, 16, 32, 64, 128
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 398,124,947,128, is 1.
Now, the common factors can be found like this.
398:2x 199
124:2x 2x 31
947:947
128:2x 2x 2x 2x 2x 2x 2
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 2 = 8
Therefore, the value for common factors is 8.
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 = 5982252032/(1x8)
LCM = 5982252032/8
LCM = 747781504
Thus, we can understand that the LCM of 398,124,947,128 is 747781504.
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FAQs on LCM of 398, 124, 947, 128
1. What is the LCM of 398, 124, 947, 128?
Answer: LCM of 398, 124, 947, 128 is 747781504.
2. How to calculate the LCM of 398, 124, 947, 128?
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 398, 124, 947, 128.
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}.