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LCM of 856, 781, 168, 670

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


Find the LCM of 856, 781, 168, 670 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 856, 781, 168, 670. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 856,781,168,670

Given numbers are 856,781,168,670

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

The LCM of 856,781,168,670 is 4703150760.

Find LCM of 856,781,168,670 with Prime Factorization


2 856, 781, 168, 670
2 428, 781, 84, 335
2 214, 781, 42, 335
107, 781, 21, 335

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

2 x 2 x 2 x 107 x 781 x 21 x 335 = 4703150760

Therefore, the lowest common multiple of 856,781,168,670 is 4703150760.

LCM Formula to Find Lowest Common Multiple of 856,781,168,670

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.

856 x 781 x 168 x 670 = 75250412160

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.

856 : 1, 2, 4, 8, 107, 214, 428, 856

781 : 1, 11, 71, 781

168 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168

670 : 1, 2, 5, 10, 67, 134, 335, 670

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 856,781,168,670, is 1.

Now, the common factors can be found like this.

856:2x 2x 2x 107

781:11x 71

168:2x 2x 2x 3x 7

670:2x 5x 67

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 2 = 16

Therefore, the value for common factors is 16.

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 = 75250412160/(1x16)

LCM = 75250412160/16

LCM = 4703150760

Thus, we can understand that the LCM of 856,781,168,670 is 4703150760.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 856, 781, 168, 670

1. What is the LCM of 856, 781, 168, 670?

Answer: LCM of 856, 781, 168, 670 is 4703150760.

2. How to calculate the LCM of 856, 781, 168, 670?

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 856, 781, 168, 670.

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}.