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LCM of 639, 868, 989, 890

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


Find the LCM of 639, 868, 989, 890 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 639, 868, 989, 890. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 639,868,989,890

Given numbers are 639,868,989,890

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

The LCM of 639,868,989,890 is 244105118460.

Find LCM of 639,868,989,890 with Prime Factorization


2 639, 868, 989, 890
639, 434, 989, 445

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

2 x 639 x 434 x 989 x 445 = 244105118460

Therefore, the lowest common multiple of 639,868,989,890 is 244105118460.

LCM Formula to Find Lowest Common Multiple of 639,868,989,890

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.

639 x 868 x 989 x 890 = 488210236920

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.

639 : 1, 3, 9, 71, 213, 639

868 : 1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868

989 : 1, 23, 43, 989

890 : 1, 2, 5, 10, 89, 178, 445, 890

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,868,989,890, is 1.

Now, the common factors can be found like this.

639:3x 3x 71

868:2x 2x 7x 31

989:23x 43

890:2x 5x 89

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

2 = 2

Therefore, the value for common factors is 2.

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 = 488210236920/(1x2)

LCM = 488210236920/2

LCM = 244105118460

Thus, we can understand that the LCM of 639,868,989,890 is 244105118460.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 639, 868, 989, 890

1. What is the LCM of 639, 868, 989, 890?

Answer: LCM of 639, 868, 989, 890 is 244105118460.

2. How to calculate the LCM of 639, 868, 989, 890?

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 639, 868, 989, 890.

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}.