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LCM of 780, 407, 692, 561

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


Find the LCM of 780, 407, 692, 561 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 780, 407, 692, 561. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 780,407,692,561

Given numbers are 780,407,692,561

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

The LCM of 780,407,692,561 is 933649860.

Find LCM of 780,407,692,561 with Prime Factorization


2 780, 407, 692, 561
2 390, 407, 346, 561
3 195, 407, 173, 561
11 65, 407, 173, 187
65, 37, 173, 17

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

2 x 2 x 3 x 11 x 65 x 37 x 173 x 17 = 933649860

Therefore, the lowest common multiple of 780,407,692,561 is 933649860.

LCM Formula to Find Lowest Common Multiple of 780,407,692,561

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.

780 x 407 x 692 x 561 = 123241781520

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.

780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780

407 : 1, 11, 37, 407

692 : 1, 2, 4, 173, 346, 692

561 : 1, 3, 11, 17, 33, 51, 187, 561

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 780,407,692,561, is 1.

Now, the common factors can be found like this.

780:2x 2x 3x 5x 13

407:11x 37

692:2x 2x 173

561:3x 11x 17

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 3x 11 = 132

Therefore, the value for common factors is 132.

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 = 123241781520/(1x132)

LCM = 123241781520/132

LCM = 933649860

Thus, we can understand that the LCM of 780,407,692,561 is 933649860.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 780, 407, 692, 561

1. What is the LCM of 780, 407, 692, 561?

Answer: LCM of 780, 407, 692, 561 is 933649860.

2. How to calculate the LCM of 780, 407, 692, 561?

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 780, 407, 692, 561.

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}.