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LCM of 628, 505, 690, 345

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


Find the LCM of 628, 505, 690, 345 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 628, 505, 690, 345. So, keep reading to learn more.

 

LCM of:

Calculate the LCM of 628,505,690,345

Given numbers are 628,505,690,345

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

The LCM of 628,505,690,345 is 21882660.

Find LCM of 628,505,690,345 with Prime Factorization


2 628, 505, 690, 345
3 314, 505, 345, 345
5 314, 505, 115, 115
23 314, 101, 23, 23
314, 101, 1, 1

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

2 x 3 x 5 x 23 x 314 x 101 x 1 x 1 = 21882660

Therefore, the lowest common multiple of 628,505,690,345 is 21882660.

LCM Formula to Find Lowest Common Multiple of 628,505,690,345

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.

628 x 505 x 690 x 345 = 75495177000

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.

628 : 1, 2, 4, 157, 314, 628

505 : 1, 5, 101, 505

690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

345 : 1, 3, 5, 15, 23, 69, 115, 345

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 628,505,690,345, is 1.

Now, the common factors can be found like this.

628:2x 2x 157

505:5x 101

690:2x 3x 5x 23

345:3x 5x 23

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

2x 3x 5x 5x 23 = 3450

Therefore, the value for common factors is 3450.

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 = 75495177000/(1x3450)

LCM = 75495177000/3450

LCM = 21882660

Thus, we can understand that the LCM of 628,505,690,345 is 21882660.

LCM of two or more Numbers Calculation Examples

FAQs on LCM of 628, 505, 690, 345

1. What is the LCM of 628, 505, 690, 345?

Answer: LCM of 628, 505, 690, 345 is 21882660.

2. How to calculate the LCM of 628, 505, 690, 345?

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 628, 505, 690, 345.

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}.