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LCM of 639, 942, 884, 640

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


Find the LCM of 639, 942, 884, 640 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, 942, 884, 640. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 639,942,884,640

Given numbers are 639,942,884,640

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

The LCM of 639,942,884,640 is 14189685120.

Find LCM of 639,942,884,640 with Prime Factorization


2 639, 942, 884, 640
2 639, 471, 442, 320
3 639, 471, 221, 160
213, 157, 221, 160

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

2 x 2 x 3 x 213 x 157 x 221 x 160 = 14189685120

Therefore, the lowest common multiple of 639,942,884,640 is 14189685120.

LCM Formula to Find Lowest Common Multiple of 639,942,884,640

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 942 x 884 x 640 = 340552442880

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

942 : 1, 2, 3, 6, 157, 314, 471, 942

884 : 1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 884

640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,942,884,640, is 1.

Now, the common factors can be found like this.

639:3x 3x 71

942:2x 3x 157

884:2x 2x 13x 17

640:2x 2x 2x 2x 2x 2x 2x 5

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 3 = 24

Therefore, the value for common factors is 24.

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 = 340552442880/(1x24)

LCM = 340552442880/24

LCM = 14189685120

Thus, we can understand that the LCM of 639,942,884,640 is 14189685120.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 639, 942, 884, 640

1. What is the LCM of 639, 942, 884, 640?

Answer: LCM of 639, 942, 884, 640 is 14189685120.

2. How to calculate the LCM of 639, 942, 884, 640?

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, 942, 884, 640.

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}.