Given numbers are 138,974,921,421

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

The LCM of 138,974,921,421 is 8686173882.

Find LCM of 138,974,921,421 with Prime Factorization

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

2 x 3 x 23 x 487 x 307 x 421 = 8686173882

Therefore, the lowest common multiple of 138,974,921,421 is 8686173882.

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.

138 x 974 x 921 x 421 = 52117043292

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.

138 : 1, 2, 3, 6, 23, 46, 69, 138

974 : 1, 2, 487, 974

921 : 1, 3, 307, 921

421 : 1, 421

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 138,974,921,421, is 1.

Now, the common factors can be found like this.

138:2x 3x 23

974:2x 487

921:3x 307

421:421

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

2x 3 = 6

Therefore, the value for common factors is 6.

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 = 52117043292/(1x6)

LCM = 52117043292/6

LCM = 8686173882

Thus, we can understand that the LCM of 138,974,921,421 is 8686173882.

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

• LCM of 238, 798, 693, 975
• LCM of 939, 301, 425, 568
• LCM of 555, 404, 225, 787
• LCM of 433, 897, 777, 913
• LCM of 961, 163, 759, 580

1. What is the LCM of 138, 974, 921, 421?

Answer: LCM of 138, 974, 921, 421 is 8686173882.

2. How to calculate the LCM of 138, 974, 921, 421?

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 138, 974, 921, 421.

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}.