Given numbers are 640,430,702,407

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

The LCM of 640,430,702,407 is 3931424640.

Find LCM of 640,430,702,407 with Prime Factorization

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

2 x 5 x 64 x 43 x 351 x 407 = 3931424640

Therefore, the lowest common multiple of 640,430,702,407 is 3931424640.

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.

640 x 430 x 702 x 407 = 78628492800

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.

640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640

430 : 1, 2, 5, 10, 43, 86, 215, 430

702 : 1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 234, 351, 702

407 : 1, 11, 37, 407

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 640,430,702,407, is 1.

Now, the common factors can be found like this.

640:2x 2x 2x 2x 2x 2x 2x 5

430:2x 5x 43

702:2x 3x 3x 3x 13

407:11x 37

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 5 = 20

Therefore, the value for common factors is 20.

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 = 78628492800/(1x20)

LCM = 78628492800/20

LCM = 3931424640

Thus, we can understand that the LCM of 640,430,702,407 is 3931424640.

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

• LCM of 429, 627, 908, 262
• LCM of 610, 575, 569, 107
• LCM of 797, 403, 274, 430
• LCM of 541, 678, 831, 131
• LCM of 764, 377, 716, 245

1. What is the LCM of 640, 430, 702, 407?

Answer: LCM of 640, 430, 702, 407 is 3931424640.

2. How to calculate the LCM of 640, 430, 702, 407?

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 640, 430, 702, 407.

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}.