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LCM of 987, 389, 120, 916

Created By : Jatin Gogia
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023


Find the LCM of 987, 389, 120, 916 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, 389, 120, 916. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 987,389,120,916

Given numbers are 987,389,120,916

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 987,389,120,916 is 3516917880.

Find LCM of 987,389,120,916 with Prime Factorization


2 987, 389, 120, 916
2 987, 389, 60, 458
3 987, 389, 30, 229
329, 389, 10, 229

Multiply the prime numbers at the bottom and the left side.

2 x 2 x 3 x 329 x 389 x 10 x 229 = 3516917880

Therefore, the lowest common multiple of 987,389,120,916 is 3516917880.

LCM Formula to Find Lowest Common Multiple of 987,389,120,916

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 389 x 120 x 916 = 42203014560

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

389 : 1, 389

120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120

916 : 1, 2, 4, 229, 458, 916

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 987,389,120,916, is 1.

Now, the common factors can be found like this.

987:3x 7x 47

389:389

120:2x 2x 2x 3x 5

916:2x 2x 229

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 3 = 12

Therefore, the value for common factors is 12.

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 = 42203014560/(1x12)

LCM = 42203014560/12

LCM = 3516917880

Thus, we can understand that the LCM of 987,389,120,916 is 3516917880.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 987, 389, 120, 916

1. What is the LCM of 987, 389, 120, 916?

Answer: LCM of 987, 389, 120, 916 is 3516917880.

2. How to calculate the LCM of 987, 389, 120, 916?

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, 389, 120, 916.

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}.