LCM of 940, 421, 138, 987
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 940, 421, 138, 987 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 940, 421, 138, 987. So, keep reading to learn more.
Given numbers are 940,421,138,987
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 940,421,138,987 is 191142420.
Find LCM of 940,421,138,987 with Prime Factorization
| 2 | 940, 421, 138, 987 |
| 3 | 470, 421, 69, 987 |
| 47 | 470, 421, 23, 329 |
| 10, 421, 23, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 47 x 10 x 421 x 23 x 7 = 191142420
Therefore, the lowest common multiple of 940,421,138,987 is 191142420.
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.
940 x 421 x 138 x 987 = 53902162440
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.
940 : 1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940
421 : 1, 421
138 : 1, 2, 3, 6, 23, 46, 69, 138
987 : 1, 3, 7, 21, 47, 141, 329, 987
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 940,421,138,987, is 1.
Now, the common factors can be found like this.
940:2x 2x 5x 47
421:421
138:2x 3x 23
987:3x 7x 47
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 47 = 282
Therefore, the value for common factors is 282.
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 = 53902162440/(1x282)
LCM = 53902162440/282
LCM = 191142420
Thus, we can understand that the LCM of 940,421,138,987 is 191142420.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 940, 421, 138, 987
1. What is the LCM of 940, 421, 138, 987?
Answer: LCM of 940, 421, 138, 987 is 191142420.
2. How to calculate the LCM of 940, 421, 138, 987?
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 940, 421, 138, 987.
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}.