Given numbers are 520,440,690,424

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

The LCM of 520,440,690,424 is 20918040.

Find LCM of 520,440,690,424 with Prime Factorization

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

2 x 2 x 2 x 5 x 13 x 11 x 69 x 53 = 20918040

Therefore, the lowest common multiple of 520,440,690,424 is 20918040.

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.

520 x 440 x 690 x 424 = 66937728000

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.

520 : 1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520

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

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

424 : 1, 2, 4, 8, 53, 106, 212, 424

2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 520,440,690,424, is 2.

Now, the common factors can be found like this.

520:2x 2x 2x 5x 13

440:2x 2x 2x 5x 11

690:2x 3x 5x 23

424:2x 2x 2x 53

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 2x 2x 2x 5x 5 = 1600

Therefore, the value for common factors is 1600.

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 = 66937728000/(2x1600)

LCM = 66937728000/3200

LCM = 20918040

Thus, we can understand that the LCM of 520,440,690,424 is 20918040.

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

• LCM of 280, 366, 100, 194
• LCM of 925, 206, 722, 380
• LCM of 895, 617, 788, 126
• LCM of 213, 460, 415, 607
• LCM of 961, 953, 727, 902

1. What is the LCM of 520, 440, 690, 424?

Answer: LCM of 520, 440, 690, 424 is 20918040.

2. How to calculate the LCM of 520, 440, 690, 424?

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 520, 440, 690, 424.

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}.