Given numbers are 420,970,388,757

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

The LCM of 420,970,388,757 is 30840180.

Find LCM of 420,970,388,757 with Prime Factorization

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

2 x 2 x 5 x 97 x 21 x 1 x 1 x 757 = 30840180

Therefore, the lowest common multiple of 420,970,388,757 is 30840180.

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.

420 x 970 x 388 x 757 = 119659898400

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.

420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

970 : 1, 2, 5, 10, 97, 194, 485, 970

388 : 1, 2, 4, 97, 194, 388

757 : 1, 757

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 420,970,388,757, is 1.

Now, the common factors can be found like this.

420:2x 2x 3x 5x 7

970:2x 5x 97

388:2x 2x 97

757:757

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 5x 97 = 3880

Therefore, the value for common factors is 3880.

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 = 119659898400/(1x3880)

LCM = 119659898400/3880

LCM = 30840180

Thus, we can understand that the LCM of 420,970,388,757 is 30840180.

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

• LCM of 829, 143, 609, 621
• LCM of 113, 175, 868, 345
• LCM of 654, 628, 728, 688
• LCM of 187, 804, 810, 755
• LCM of 837, 987, 300, 895

1. What is the LCM of 420, 970, 388, 757?

Answer: LCM of 420, 970, 388, 757 is 30840180.

2. How to calculate the LCM of 420, 970, 388, 757?

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 420, 970, 388, 757.

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}.