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LCM of 661, 390, 961, 767, 421

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


Find the LCM of 661, 390, 961, 767, 421 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 661, 390, 961, 767, 421. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 661,390,961,767,421

Given numbers are 661,390,961,767,421

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

The LCM of 661,390,961,767,421 is 6153519223410.

Find LCM of 661,390,961,767,421 with Prime Factorization


13 661, 390, 961, 767, 421
661, 30, 961, 59, 421

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

13 x 661 x 30 x 961 x 59 x 421 = 6153519223410

Therefore, the lowest common multiple of 661,390,961,767,421 is 6153519223410.

LCM Formula to Find Lowest Common Multiple of 661,390,961,767,421

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.

661 x 390 x 961 x 767 x 421 = 79995749904330

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.

661 : 1, 661

390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

961 : 1, 31, 961

767 : 1, 13, 59, 767

421 : 1, 421

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 661,390,961,767,421, is 1.

Now, the common factors can be found like this.

661:661

390:2x 3x 5x 13

961:31x 31

767:13x 59

421:421

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

13 = 13

Therefore, the value for common factors is 13.

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 = 79995749904330/(1x13)

LCM = 79995749904330/13

LCM = 6153519223410

Thus, we can understand that the LCM of 661,390,961,767,421 is 6153519223410.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 661, 390, 961, 767, 421

1. What is the LCM of 661, 390, 961, 767, 421?

Answer: LCM of 661, 390, 961, 767, 421 is 6153519223410.

2. How to calculate the LCM of 661, 390, 961, 767, 421?

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 661, 390, 961, 767, 421.

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}.