Given numbers are 638,387,880,690

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

The LCM of 638,387,880,690 is 227153520.

Find LCM of 638,387,880,690 with Prime Factorization

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

2 x 3 x 5 x 11 x 29 x 129 x 8 x 23 = 227153520

Therefore, the lowest common multiple of 638,387,880,690 is 227153520.

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.

638 x 387 x 880 x 690 = 149921323200

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.

638 : 1, 2, 11, 22, 29, 58, 319, 638

387 : 1, 3, 9, 43, 129, 387

880 : 1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880

690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 638,387,880,690, is 1.

Now, the common factors can be found like this.

638:2x 11x 29

387:3x 3x 43

880:2x 2x 2x 2x 5x 11

690:2x 3x 5x 23

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 3x 5x 11 = 660

Therefore, the value for common factors is 660.

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 = 149921323200/(1x660)

LCM = 149921323200/660

LCM = 227153520

Thus, we can understand that the LCM of 638,387,880,690 is 227153520.

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

• LCM of 574, 509, 173, 723
• LCM of 824, 721, 392, 779
• LCM of 943, 851, 661, 577
• LCM of 760, 704, 533, 505
• LCM of 471, 453, 670, 855

1. What is the LCM of 638, 387, 880, 690?

Answer: LCM of 638, 387, 880, 690 is 227153520.

2. How to calculate the LCM of 638, 387, 880, 690?

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 638, 387, 880, 690.

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}.