Given numbers are 720,522,639,821

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

The LCM of 720,522,639,821 is 1217116080.

Find LCM of 720,522,639,821 with Prime Factorization

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

2 x 3 x 3 x 40 x 29 x 71 x 821 = 1217116080

Therefore, the lowest common multiple of 720,522,639,821 is 1217116080.

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.

720 x 522 x 639 x 821 = 197172804960

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.

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

522 : 1, 2, 3, 6, 9, 18, 29, 58, 87, 174, 261, 522

639 : 1, 3, 9, 71, 213, 639

821 : 1, 821

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 720,522,639,821, is 1.

Now, the common factors can be found like this.

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

522:2x 3x 3x 29

639:3x 3x 71

821:821

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

2x 3x 3x 3x 3 = 162

Therefore, the value for common factors is 162.

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 = 197172804960/(1x162)

LCM = 197172804960/162

LCM = 1217116080

Thus, we can understand that the LCM of 720,522,639,821 is 1217116080.

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

• LCM of 547, 325, 694, 180
• LCM of 436, 725, 527, 328
• LCM of 981, 426, 481, 639
• LCM of 866, 898, 987, 768
• LCM of 462, 825, 647, 884

1. What is the LCM of 720, 522, 639, 821?

Answer: LCM of 720, 522, 639, 821 is 1217116080.

2. How to calculate the LCM of 720, 522, 639, 821?

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 720, 522, 639, 821.

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}.