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LCM of 406, 670, 678, 840

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


Find the LCM of 406, 670, 678, 840 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 406, 670, 678, 840. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 406,670,678,840

Given numbers are 406,670,678,840

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

The LCM of 406,670,678,840 is 184429560.

Find LCM of 406,670,678,840 with Prime Factorization


2 406, 670, 678, 840
3 203, 335, 339, 420
5 203, 335, 113, 140
7 203, 67, 113, 28
29, 67, 113, 4

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

2 x 3 x 5 x 7 x 29 x 67 x 113 x 4 = 184429560

Therefore, the lowest common multiple of 406,670,678,840 is 184429560.

LCM Formula to Find Lowest Common Multiple of 406,670,678,840

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.

406 x 670 x 678 x 840 = 154920830400

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.

406 : 1, 2, 7, 14, 29, 58, 203, 406

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

678 : 1, 2, 3, 6, 113, 226, 339, 678

840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840

2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 406,670,678,840, is 2.

Now, the common factors can be found like this.

406:2x 7x 29

670:2x 5x 67

678:2x 3x 113

840:2x 2x 2x 3x 5x 7

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 3x 5x 7 = 420

Therefore, the value for common factors is 420.

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 = 154920830400/(2x420)

LCM = 154920830400/840

LCM = 184429560

Thus, we can understand that the LCM of 406,670,678,840 is 184429560.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 406, 670, 678, 840

1. What is the LCM of 406, 670, 678, 840?

Answer: LCM of 406, 670, 678, 840 is 184429560.

2. How to calculate the LCM of 406, 670, 678, 840?

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 406, 670, 678, 840.

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}.