Given numbers are 221,194,720,680

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

The LCM of 221,194,720,680 is 15434640.

Find LCM of 221,194,720,680 with Prime Factorization

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

2 x 2 x 2 x 5 x 17 x 13 x 97 x 18 x 1 = 15434640

Therefore, the lowest common multiple of 221,194,720,680 is 15434640.

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 194 x 720 x 680 = 20991110400

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

194 : 1, 2, 97, 194

720 : 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720

680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 221,194,720,680, is 1.

Now, the common factors can be found like this.

221:13x 17

194:2x 97

720:2x 2x 2x 2x 3x 3x 5

680:2x 2x 2x 5x 17

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

2x 2x 2x 2x 5x 17 = 1360

Therefore, the value for common factors is 1360.

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 = 20991110400/(1x1360)

LCM = 20991110400/1360

LCM = 15434640

Thus, we can understand that the LCM of 221,194,720,680 is 15434640.

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

• LCM of 763, 592, 385, 210
• LCM of 822, 558, 337, 716
• LCM of 483, 171, 181, 734
• LCM of 582, 535, 882, 352
• LCM of 903, 709, 542, 390

1. What is the LCM of 221, 194, 720, 680?

Answer: LCM of 221, 194, 720, 680 is 15434640.

2. How to calculate the LCM of 221, 194, 720, 680?

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, 194, 720, 680.

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}.