Given numbers are 639,401,431,820,994

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

The LCM of 639,401,431,820,994 is 633919911660.

Find LCM of 639,401,431,820,994 with Prime Factorization

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

2 x 71 x 9 x 401 x 431 x 410 x 7 = 633919911660

Therefore, the lowest common multiple of 639,401,431,820,994 is 633919911660.

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.

639 x 401 x 431 x 820 x 994 = 90016627455720

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.

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

401 : 1, 401

431 : 1, 431

820 : 1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820

994 : 1, 2, 7, 14, 71, 142, 497, 994

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 639,401,431,820,994, is 1.

Now, the common factors can be found like this.

639:3x 3x 71

401:401

431:431

820:2x 2x 5x 41

994:2x 7x 71

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

2x 71 = 142

Therefore, the value for common factors is 142.

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 = 90016627455720/(1x142)

LCM = 90016627455720/142

LCM = 633919911660

Thus, we can understand that the LCM of 639,401,431,820,994 is 633919911660.

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

• LCM of 810, 365, 931, 429, 534
• LCM of 726, 193, 116, 565, 111
• LCM of 967, 260, 126, 219, 217
• LCM of 198, 873, 563, 799, 445
• LCM of 439, 289, 977, 638, 779

1. What is the LCM of 639, 401, 431, 820, 994?

Answer: LCM of 639, 401, 431, 820, 994 is 633919911660.

2. How to calculate the LCM of 639, 401, 431, 820, 994?

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 639, 401, 431, 820, 994.

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}.