Given numbers are 642,185,673,428

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

The LCM of 642,185,673,428 is 159864420.

Find LCM of 642,185,673,428 with Prime Factorization

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

2 x 107 x 3 x 185 x 673 x 2 = 159864420

Therefore, the lowest common multiple of 642,185,673,428 is 159864420.

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.

642 x 185 x 673 x 428 = 34210985880

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.

642 : 1, 2, 3, 6, 107, 214, 321, 642

185 : 1, 5, 37, 185

673 : 1, 673

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

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 642,185,673,428, is 1.

Now, the common factors can be found like this.

642:2x 3x 107

185:5x 37

673:673

428:2x 2x 107

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

2x 107 = 214

Therefore, the value for common factors is 214.

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 = 34210985880/(1x214)

LCM = 34210985880/214

LCM = 159864420

Thus, we can understand that the LCM of 642,185,673,428 is 159864420.

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

• LCM of 237, 747, 719, 519
• LCM of 130, 787, 385, 588
• LCM of 951, 646, 384, 898
• LCM of 582, 811, 638, 513
• LCM of 680, 498, 539, 224

1. What is the LCM of 642, 185, 673, 428?

Answer: LCM of 642, 185, 673, 428 is 159864420.

2. How to calculate the LCM of 642, 185, 673, 428?

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 642, 185, 673, 428.

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}.