Given numbers are 361,128,520,455

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

The LCM of 361,128,520,455 is 21024640.

Find LCM of 361,128,520,455 with Prime Factorization

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

2 x 2 x 2 x 5 x 13 x 361 x 16 x 1 x 7 = 21024640

Therefore, the lowest common multiple of 361,128,520,455 is 21024640.

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.

361 x 128 x 520 x 455 = 10932812800

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.

361 : 1, 19, 361

128 : 1, 2, 4, 8, 16, 32, 64, 128

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

455 : 1, 5, 7, 13, 35, 65, 91, 455

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 361,128,520,455, is 1.

Now, the common factors can be found like this.

361:19x 19

128:2x 2x 2x 2x 2x 2x 2

520:2x 2x 2x 5x 13

455:5x 7x 13

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 13 = 520

Therefore, the value for common factors is 520.

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 = 10932812800/(1x520)

LCM = 10932812800/520

LCM = 21024640

Thus, we can understand that the LCM of 361,128,520,455 is 21024640.

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

• LCM of 649, 815, 483, 402
• LCM of 266, 592, 732, 313
• LCM of 141, 707, 370, 611
• LCM of 963, 432, 853, 540
• LCM of 388, 187, 787, 845

1. What is the LCM of 361, 128, 520, 455?

Answer: LCM of 361, 128, 520, 455 is 21024640.

2. How to calculate the LCM of 361, 128, 520, 455?

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 361, 128, 520, 455.

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}.