Given numbers are 442,642,158,128,620

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

The LCM of 442,642,158,128,620 is 111190085760.

Find LCM of 442,642,158,128,620 with Prime Factorization

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

2 x 2 x 221 x 321 x 79 x 32 x 155 = 111190085760

Therefore, the lowest common multiple of 442,642,158,128,620 is 111190085760.

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.

442 x 642 x 158 x 128 x 620 = 3558082744320

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.

442 : 1, 2, 13, 17, 26, 34, 221, 442

642 : 1, 2, 3, 6, 107, 214, 321, 642

158 : 1, 2, 79, 158

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

620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620

2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 442,642,158,128,620, is 2.

Now, the common factors can be found like this.

442:2x 13x 17

642:2x 3x 107

158:2x 79

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

620:2x 2x 5x 31

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 2 = 16

Therefore, the value for common factors is 16.

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 = 3558082744320/(2x16)

LCM = 3558082744320/32

LCM = 111190085760

Thus, we can understand that the LCM of 442,642,158,128,620 is 111190085760.

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

• LCM of 322, 439, 771, 500, 501
• LCM of 599, 471, 216, 741, 661
• LCM of 951, 905, 294, 321, 610
• LCM of 200, 912, 842, 895, 147
• LCM of 600, 641, 229, 544, 184

1. What is the LCM of 442, 642, 158, 128, 620?

Answer: LCM of 442, 642, 158, 128, 620 is 111190085760.

2. How to calculate the LCM of 442, 642, 158, 128, 620?

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 442, 642, 158, 128, 620.

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}.