Given numbers are 428,347,990

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

The LCM of 428,347,990 is 73515420.

Find LCM of 428,347,990 with Prime Factorization

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

2 x 214 x 347 x 495 = 73515420

Therefore, the lowest common multiple of 428,347,990 is 73515420.

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.

428 x 347 x 990 = 147030840

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.

428 : 1, 2, 4, 107, 214, 428

347 : 1, 347

990 : 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 428,347,990, is 1.

Now, the common factors can be found like this.

428:2x 2x 107

347:347

990:2x 3x 3x 5x 11

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 = 147030840/(1x2)

LCM = 147030840/2

LCM = 73515420

Thus, we can understand that the LCM of 428,347,990 is 73515420.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 815, 319, 929
• LCM of 235, 757, 577
• LCM of 310, 384, 805
• LCM of 345, 330, 945
• LCM of 892, 858, 732

1. What is the LCM of 428, 347, 990?

Answer: LCM of 428, 347, 990 is 73515420.

2. How to calculate the LCM of 428, 347, 990?

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 428, 347, 990.

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}.