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LCM of 817, 646, 788, 210

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


Find the LCM of 817, 646, 788, 210 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 817, 646, 788, 210. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 817,646,788,210

Given numbers are 817,646,788,210

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

The LCM of 817,646,788,210 is 1149175860.

Find LCM of 817,646,788,210 with Prime Factorization


2 817, 646, 788, 210
19 817, 323, 394, 105
43, 17, 394, 105

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

2 x 19 x 43 x 17 x 394 x 105 = 1149175860

Therefore, the lowest common multiple of 817,646,788,210 is 1149175860.

LCM Formula to Find Lowest Common Multiple of 817,646,788,210

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.

817 x 646 x 788 x 210 = 87337365360

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.

817 : 1, 19, 43, 817

646 : 1, 2, 17, 19, 34, 38, 323, 646

788 : 1, 2, 4, 197, 394, 788

210 : 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 817,646,788,210, is 1.

Now, the common factors can be found like this.

817:19x 43

646:2x 17x 19

788:2x 2x 197

210:2x 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 19 = 76

Therefore, the value for common factors is 76.

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 = 87337365360/(1x76)

LCM = 87337365360/76

LCM = 1149175860

Thus, we can understand that the LCM of 817,646,788,210 is 1149175860.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 817, 646, 788, 210

1. What is the LCM of 817, 646, 788, 210?

Answer: LCM of 817, 646, 788, 210 is 1149175860.

2. How to calculate the LCM of 817, 646, 788, 210?

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 817, 646, 788, 210.

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}.