Given numbers are 791,21,921

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

The LCM of 791,21,921 is 728511.

Find LCM of 791,21,921 with Prime Factorization

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

3 x 7 x 113 x 1 x 307 = 728511

Therefore, the lowest common multiple of 791,21,921 is 728511.

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.

791 x 21 x 921 = 15298731

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.

791 : 1, 7, 113, 791

21 : 1, 3, 7, 21

921 : 1, 3, 307, 921

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 791,21,921, is 1.

Now, the common factors can be found like this.

791:7x 113

21:3x 7

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.

3x 7 = 21

Therefore, the value for common factors is 21.

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 = 15298731/(1x21)

LCM = 15298731/21

LCM = 728511

Thus, we can understand that the LCM of 791,21,921 is 728511.

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

• LCM of 265, 64, 899
• LCM of 286, 21, 166
• LCM of 382, 13, 899
• LCM of 187, 13, 786
• LCM of 490, 60, 111

1. What is the LCM of 791, 21, 921?

Answer: LCM of 791, 21, 921 is 728511.

2. How to calculate the LCM of 791, 21, 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 791, 21, 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}.