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LCM of 870, 357, 408, 645

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


Find the LCM of 870, 357, 408, 645 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 870, 357, 408, 645. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 870,357,408,645

Given numbers are 870,357,408,645

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

The LCM of 870,357,408,645 is 17807160.

Find LCM of 870,357,408,645 with Prime Factorization


2 870, 357, 408, 645
3 435, 357, 204, 645
5 145, 119, 68, 215
17 29, 119, 68, 43
29, 7, 4, 43

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

2 x 3 x 5 x 17 x 29 x 7 x 4 x 43 = 17807160

Therefore, the lowest common multiple of 870,357,408,645 is 17807160.

LCM Formula to Find Lowest Common Multiple of 870,357,408,645

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.

870 x 357 x 408 x 645 = 81734864400

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.

870 : 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870

357 : 1, 3, 7, 17, 21, 51, 119, 357

408 : 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408

645 : 1, 3, 5, 15, 43, 129, 215, 645

3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 870,357,408,645, is 3.

Now, the common factors can be found like this.

870:2x 3x 5x 29

357:3x 7x 17

408:2x 2x 2x 3x 17

645:3x 5x 43

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 3x 5x 17 = 1530

Therefore, the value for common factors is 1530.

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 = 81734864400/(3x1530)

LCM = 81734864400/4590

LCM = 17807160

Thus, we can understand that the LCM of 870,357,408,645 is 17807160.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 870, 357, 408, 645

1. What is the LCM of 870, 357, 408, 645?

Answer: LCM of 870, 357, 408, 645 is 17807160.

2. How to calculate the LCM of 870, 357, 408, 645?

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 870, 357, 408, 645.

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}.