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LCM of 120, 781, 140, 158

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


Find the LCM of 120, 781, 140, 158 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 120, 781, 140, 158. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 120,781,140,158

Given numbers are 120,781,140,158

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

The LCM of 120,781,140,158 is 51827160.

Find LCM of 120,781,140,158 with Prime Factorization


2 120, 781, 140, 158
2 60, 781, 70, 79
5 30, 781, 35, 79
6, 781, 7, 79

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

2 x 2 x 5 x 6 x 781 x 7 x 79 = 51827160

Therefore, the lowest common multiple of 120,781,140,158 is 51827160.

LCM Formula to Find Lowest Common Multiple of 120,781,140,158

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.

120 x 781 x 140 x 158 = 2073086400

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.

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

781 : 1, 11, 71, 781

140 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140

158 : 1, 2, 79, 158

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 120,781,140,158, is 1.

Now, the common factors can be found like this.

120:2x 2x 2x 3x 5

781:11x 71

140:2x 2x 5x 7

158:2x 79

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 5 = 40

Therefore, the value for common factors is 40.

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 = 2073086400/(1x40)

LCM = 2073086400/40

LCM = 51827160

Thus, we can understand that the LCM of 120,781,140,158 is 51827160.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 120, 781, 140, 158

1. What is the LCM of 120, 781, 140, 158?

Answer: LCM of 120, 781, 140, 158 is 51827160.

2. How to calculate the LCM of 120, 781, 140, 158?

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 120, 781, 140, 158.

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}.