Given numbers are 221,39,686

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

The LCM of 221,39,686 is 454818.

Find LCM of 221,39,686 with Prime Factorization

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

13 x 17 x 3 x 686 = 454818

Therefore, the lowest common multiple of 221,39,686 is 454818.

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.

221 x 39 x 686 = 5912634

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.

221 : 1, 13, 17, 221

39 : 1, 3, 13, 39

686 : 1, 2, 7, 14, 49, 98, 343, 686

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 221,39,686, is 1.

Now, the common factors can be found like this.

221:13x 17

39:3x 13

686:2x 7x 7x 7

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

13 = 13

Therefore, the value for common factors is 13.

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 = 5912634/(1x13)

LCM = 5912634/13

LCM = 454818

Thus, we can understand that the LCM of 221,39,686 is 454818.

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

• LCM of 648, 40, 659
• LCM of 944, 17, 106
• LCM of 778, 59, 352
• LCM of 394, 61, 489
• LCM of 288, 48, 605

1. What is the LCM of 221, 39, 686?

Answer: LCM of 221, 39, 686 is 454818.

2. How to calculate the LCM of 221, 39, 686?

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 221, 39, 686.

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}.