Given numbers are 643,142,674,638

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

The LCM of 643,142,674,638 is 9815668918.

Find LCM of 643,142,674,638 with Prime Factorization

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

2 x 643 x 71 x 337 x 319 = 9815668918

Therefore, the lowest common multiple of 643,142,674,638 is 9815668918.

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.

643 x 142 x 674 x 638 = 39262675672

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.

643 : 1, 643

142 : 1, 2, 71, 142

674 : 1, 2, 337, 674

638 : 1, 2, 11, 22, 29, 58, 319, 638

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,142,674,638, is 1.

Now, the common factors can be found like this.

643:643

142:2x 71

674:2x 337

638:2x 11x 29

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

2x 2 = 4

Therefore, the value for common factors is 4.

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 = 39262675672/(1x4)

LCM = 39262675672/4

LCM = 9815668918

Thus, we can understand that the LCM of 643,142,674,638 is 9815668918.

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

• LCM of 116, 735, 321, 802
• LCM of 772, 230, 953, 449
• LCM of 586, 133, 362, 232
• LCM of 606, 256, 992, 457
• LCM of 676, 138, 538, 115

1. What is the LCM of 643, 142, 674, 638?

Answer: LCM of 643, 142, 674, 638 is 9815668918.

2. How to calculate the LCM of 643, 142, 674, 638?

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 643, 142, 674, 638.

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}.