Given numbers are 638,656,921

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

The LCM of 638,656,921 is 192732144.

Find LCM of 638,656,921 with Prime Factorization

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

2 x 319 x 328 x 921 = 192732144

Therefore, the lowest common multiple of 638,656,921 is 192732144.

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.

638 x 656 x 921 = 385464288

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.

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

656 : 1, 2, 4, 8, 16, 41, 82, 164, 328, 656

921 : 1, 3, 307, 921

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,656,921, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

656:2x 2x 2x 2x 41

921:3x 307

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 = 385464288/(1x2)

LCM = 385464288/2

LCM = 192732144

Thus, we can understand that the LCM of 638,656,921 is 192732144.

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

• LCM of 269, 564, 753
• LCM of 484, 871, 291
• LCM of 273, 437, 902
• LCM of 278, 415, 421
• LCM of 858, 738, 335

1. What is the LCM of 638, 656, 921?

Answer: LCM of 638, 656, 921 is 192732144.

2. How to calculate the LCM of 638, 656, 921?

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 638, 656, 921.

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}.