LCM of 278, 398, 139, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 278, 398, 139, 642 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 278, 398, 139, 642. So, keep reading to learn more.
Given numbers are 278,398,139,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 278,398,139,642 is 17758362.
Find LCM of 278,398,139,642 with Prime Factorization
| 2 | 278, 398, 139, 642 |
| 139 | 139, 199, 139, 321 |
| 1, 199, 1, 321 |
Multiply the prime numbers at the bottom and the left side.
2 x 139 x 1 x 199 x 1 x 321 = 17758362
Therefore, the lowest common multiple of 278,398,139,642 is 17758362.
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.
278 x 398 x 139 x 642 = 9873649272
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.
278 : 1, 2, 139, 278
398 : 1, 2, 199, 398
139 : 1, 139
642 : 1, 2, 3, 6, 107, 214, 321, 642
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 278,398,139,642, is 1.
Now, the common factors can be found like this.
278:2x 139
398:2x 199
139:139
642:2x 3x 107
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 139 = 556
Therefore, the value for common factors is 556.
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 = 9873649272/(1x556)
LCM = 9873649272/556
LCM = 17758362
Thus, we can understand that the LCM of 278,398,139,642 is 17758362.
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FAQs on LCM of 278, 398, 139, 642
1. What is the LCM of 278, 398, 139, 642?
Answer: LCM of 278, 398, 139, 642 is 17758362.
2. How to calculate the LCM of 278, 398, 139, 642?
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 278, 398, 139, 642.
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}.